Fuel economy in aircraft (English Wikipedia)

"Dornier 328-100 (TP)" (PDF). 328 Support Services GmbH. 2013. Archived from the original (PDF) on 13 April 2021. Retrieved 8 July 2018.
"Dornier 328-100 (TP)" (PDF). 328 Support Services GmbH. 2013. Archived from the original (PDF) on 13 April 2021. Retrieved 8 July 2018.

aerionsupersonic.com

"Performance > Speed". Aerion. Archived from the original on 20 November 2015. Retrieved 6 April 2017.

af.mil

arnold.af.mil

Philip Lorenz III (3 July 2007). "AEDC testing brings unique blended wing aircraft closer to flight". Arnold Air Force Base. Archived from the original on 14 July 2014. Retrieved 10 April 2012.

airbus.com

"The A380: The future of flying". Airbus. Archived from the original on 14 December 2007. Retrieved 22 March 2008.

aircraft-commerce.com

"Analysing the options for 757 replacement" (PDF). Aircraft Commerce. August 2005. Archived from the original (PDF) on 17 September 2012. Retrieved 16 July 2014.
Lufthansa Systems' Lido/Flight via "A350-900/-1000 fuel burn & operating performance" (PDF). Aircraft Commerce. December 2018.

airfinancejournal.com

"Air Investor 2021 p.43". Air Finance Journal. January 2021.
"Air Investor 2021 p.44". Air Finance Journal. January 2021.
"Air Investor 2021, p.51". Air Finance Journal. January 2021.
"Air Investor 2021, p.52". Air Finance Journal. January 2021.
"Air Investor 2021 p.36". Air Finance Journal. January 2021.
"Air Investor 2021". Air Finance Journal. January 2021.
"Air Investor 2021 p.39". Air Finance Journal. January 2021.
"Air Investor 2021, p.48". Air Finance Journal. January 2021.
"Air Investor 2021, p.48". Air Finance Journal. January 2021.
"Air Investor 2021, p.48". Air Finance Journal. January 2021.
"Air Investor 2021, p.43". Air Finance Journal. January 2021.

airinsight.com

"What Might an Engine Improvement and Sharklets Provide?". Air Insight. 4 July 2016.

airwaysnews.com

"120 Brasilia Sales Brochure". Embraer. p. 8.
"ANALYSIS: A320neo vs. 737 MAX: Airbus is Leading (Slightly) – Part II". Airways News. 5 February 2016. Archived from the original on 6 February 2016.
Vinay Bhaskara (25 November 2014). "UPDATED ANALYSIS: Delta Order for A350; A330neo Hinged on Pricing, Availability". Airways News. Archived from the original on 17 November 2015. Retrieved 28 November 2014.
"ANALYSIS: The Boeing 787-8 and Airbus A330-800neo are Far From Dead". Airways News. 17 March 2016.

antonov.com

"AN-148/AN-158 family overview" (PDF). Antonov. 2017. Archived from the original (PDF) on 18 February 2018.

aspireaviation.com

"Boeing: 777 way much better than A330". Aspire aviation. 8 December 2010.
"Airbus A350: is the Xtra making the difference ?". Aspire Aviation. 8 June 2015.

atr-aircraft.com

"ATR 72-600 The first choice for operators".

atraircraft.com

"Fuel saving" (PDF). ATR. January 2011.

aviationweek.com

James Albright (27 February 2016). "Getting the Most Miles from Your Jet-A". Business & Commercial Aviation. Aviation Week.
Jens Flottau (18 November 2019). "Airbus Seeks Up To 10% Fuel Burn Savings By Aircraft Flying Together". Aviation Week Network.
Graham Warwick (6 May 2016). "Problems Aerospace Still Has To Solve". Aviation Week & Space Technology. Archived from the original on 2 January 2018. Retrieved 2 January 2018.
Graham Warwick (27 January 2017). "When Will These Civil Aircraft Concepts Fly?". Aviation Week & Space Technology.

bloomberg.com

Why the Longest Nonstop Flights Are Ending, Bloomberg Bus., 31 October 2013.

boeing.com

Boeing 787 Technology, Boeing
"737 performance summary" (PDF). Boeing. 2007. Archived from the original (PDF) on 25 July 2014.
"757 performance summary" (PDF). Boeing. 2007.
"747-8 performance summary" (PDF). Boeing. 2010. Archived from the original (PDF) on 24 July 2014.
"767 performance summary" (PDF). Boeing. 2006. Archived from the original (PDF) on 15 April 2015.
"777 performance summary" (PDF). Boeing. 2009. Archived from the original (PDF) on 4 January 2014.
"747 performance summary" (PDF). Boeing. 2010. Archived from the original (PDF) on 25 July 2014.

bombardier.com

commercialaircraft.bombardier.com

"CS100 environmental product declaration" (PDF). Bombardier. 27 September 2016. Archived from the original (PDF) on 11 December 2016.
"CS300 environmental product declaration" (PDF). Bombardier. 27 September 2017.
"Q400 Fuel efficiency manual" (PDF). Bombardier. 2014.
"Q400 Fuel efficiency manual" (PDF). Bombardier. 2014.

books.google.com

Antonio Filippone (2012). Advanced Aircraft Flight Performance. Cambridge University Press. p. 454. ISBN 978-1-139-78966-0.

caa.co.uk

Basic Principles of the Continuous Descent Approach (CDA) for the Non-Aviation Community (PDF), Civil Aviation Authority, archived from the original (PDF) on 9 November 2008

cathaypacific.com

downloads.cathaypacific.com

"Sustainable Development Report 2016" (PDF). Cathay Pacific. April 2017. p. 5.

chalmers.se

publications.lib.chalmers.se

Richard Avellán (2011). On the Design of Energy Efficient Aero Engines (PDF) (Thesis). Chalmers University of Technology.

cirium.com

"The impact of winglets on fuel consumption and aircraft emissions". Cirium. Retrieved 24 August 2023.

dcsw5hu9eqt6x.cloudfront.net

"Kodiak Brochure" (PDF). Quest Aircraft. April 2014. Archived from the original (PDF) on 8 February 2017. Retrieved 20 February 2017.

defra.gov.uk

archive.defra.gov.uk

DEFRA (2008). 2008 Guidelines to Defra's GHG Conversion Factors: Methodology Paper for Transport Emission Factors Archived 5 January 2012 at the Wayback Machine

dlr.de

"Emission-free airports – DLR develops a fuel cellpowered electric nose wheel for commercial aircraft" (PDF) (Press release). DLR. 1 February 2011.

doi.org

D.S.Lee; et al. (2021), "The contribution of global aviation to anthropogenic climate forcing for 2000 to 2018", Atmospheric Environment, 244: 117834, Bibcode:2021AtmEn.24417834L, doi:10.1016/j.atmosenv.2020.117834, PMC 7468346, PMID 32895604
Gany, Alon (July 2006). "Effect of Fuel Properties on the Specific Thrust of a Ramjet Engine". Defence Science Journal. 56 (3): 321–328. doi:10.14429/dsj.56.1895.
European Aviation Safety Agency; EAA (January 2019). European Aviation Environmental Report 2019 (PDF). EASA, EEA and Eurocontrol. p. 7. doi:10.2822/309946. ISBN 978-92-9210-214-2. Archived from the original (PDF) on 9 February 2019. Retrieved 26 November 2020.
Timmis, A.; et al. (1 January 2015). "Environmental impact assessment of aviation emission reduction through the implementation of composite materials". The International Journal of Life Cycle Assessment. 20 (2): 233–243. doi:10.1007/s11367-014-0824-0. S2CID 55899619.
Ludovic Wiart; et al. (July 2015). Development of NOVA Aircraft Configurations for Large Engine Integration Studies. AIAA Aviation 2015, Dallas, TX. ONERA. doi:10.2514/6.2015-2254.

ecogeek.org

Hank Green (8 October 2007). "Fuel Efficient Plane Prototype Hits Skies". Ecogeek. Archived from the original on 14 July 2014. Retrieved 6 July 2014.

energy-leader.net

"Sukhoi SSJ100, Embraer ERJ190, Airbus A319 Operational and Economic Comparison". Sukhoi. March 2013.

espacenet.com

worldwide.espacenet.com

US application 2009020643, Airbus & Christophe Cros, "Aircraft having reduced environmental impact", published 22 January 2009

europa.eu

easa.europa.eu

European Aviation Safety Agency; EAA (January 2019). European Aviation Environmental Report 2019 (PDF). EASA, EEA and Eurocontrol. p. 7. doi:10.2822/309946. ISBN 978-92-9210-214-2. Archived from the original (PDF) on 9 February 2019. Retrieved 26 November 2020.

fai.org

"Records > Aeroplane efficiency > Current". Fédération Aéronautique Internationale.

flightglobal.com

Max Kingsley-Jones (15 November 2009). "Dubai 09: A320s sharklets to deliver 3.5% lower fuel burn from 2012". Flight International.
Andrew Doyle (24 October 2012). "SIA to drop nonstop USA flights as Airbus buys back A340s". flightglobal.com.
David Kaminski-Morrow (13 November 2019). "Wizz chief derides airline rivals' zero-carbon pledges". Flightglobal.
Greg Waldron (29 November 2021). "Cebu Pacific takes delivery of high-density A330neo". Flightglobal.
"Tests prove electric-drive concept". FlightGlobal. 9 August 2005.
David Kaminski-Morrow (4 June 2018). "Aeroflot outlines performance expectations for MC-21s". Flight Global.
Stephen Trimble (24 October 2017). "Aurora Flight Sciences to evaluate NASA electric airliner design". Flightglobal.

ft.com

Tanya Powley; Peggy Bollinger (6 November 2015). "A new era of 'ultra-long-haul' aviation". Financial Times. Archived from the original on 4 March 2023. Retrieved 22 December 2016.

fueleconomy.gov

"2014 Toyota Prius fuel economy". United States Environmental Protection Agency.

gcmap.com

"Distance from JFK to LHR". great circle mapper.
"Distance from HKG to SFO". great circle mapper.

ghostarchive.org

Tanya Powley; Peggy Bollinger (6 November 2015). "A new era of 'ultra-long-haul' aviation". Financial Times. Archived from the original on 4 March 2023. Retrieved 22 December 2016.

harvard.edu

ui.adsabs.harvard.edu

D.S.Lee; et al. (2021), "The contribution of global aviation to anthropogenic climate forcing for 2000 to 2018", Atmospheric Environment, 244: 117834, Bibcode:2021AtmEn.24417834L, doi:10.1016/j.atmosenv.2020.117834, PMC 7468346, PMID 32895604

iata.org

Simon Weselby (October 2012). "Fuel Burn vs. Maintenance Costs" (PDF). IATA maintenance cost conference. Airbus.
"Technology Roadmap for Environmental Improvement - Fact Sheet" (PDF). IATA. December 2019. Archived from the original (PDF) on 29 June 2020.

icscc.org.cn

Operational Opportunities to Minimize Fuel Use and Reduce Emissions (PDF), International Civil Aviation Organization, 2014

iea.org

"Tracking Transport: Aviation". International Energy Agency. May 2019.

ipcc.ch

archive.ipcc.ch

Joyce E. Penner; et al. (1999), "9.2.2. Developments in Technology", Special Report on Aviation and the Global Atmosphere, IPCC

lboro.ac.uk

dspace.lboro.ac.uk

Timmis, A.; et al. (1 January 2015). "Environmental impact assessment of aviation emission reduction through the implementation of composite materials". The International Journal of Life Cycle Assessment. 20 (2): 233–243. doi:10.1007/s11367-014-0824-0. S2CID 55899619.

leehamnews.com

Bjorn Fehrm (26 April 2017). "Aeroflot, the route to a modern airline. Part 3". Leeham Co.
Bjorn Ferhm (20 December 2019). "Why e in ePlane shall stand for environment, Part 2. Fly shorter routes". Leeham News.
"CS300 first flight Wednesday, direct challenge to 737-7 and A319neo". Leeham News. 25 February 2015.
"Embraer continues and refines its strategy at the low-end of 100-149 seat sector". Leeham News. 13 January 2014.
"Boeing 737 MAX: performance with reported engine SFC shortfall". Leeham News. 15 April 2015.
Bjorn Fehrm (25 February 2015). "Redefining the 757 replacement: Requirement for the 225/5000 Sector". Leeham News.
"737 MAX 8 could be enabler for some LCC Long Haul". Leeham News. 8 December 2014.
"Updating the A380: the prospect of a neo version and what's involved". leeham news. 3 February 2014.

lufthansa.com

"Modern, Quiet and Environmentally Efficient: Lufthansa Group Orders 59 Ultra-Modern Wide-Body Boeing 777-9X and Airbus A350-900 Aircraft" (PDF) (Press release). Lufthansa. 19 September 2013. Archived from the original (PDF) on 23 October 2017.

materialstoday.com

Marsh, George (8 April 2014). "Composites flying high (Part 1)". Materials Today. Archived from the original on 16 September 2015. Retrieved 23 May 2015.

mcr.aero

"MCR4S Brochure" (PDF). SE Aviation Aircraft. August 2021.

mediaroom.com

boeing.mediaroom.com

Tom Koehler (27 October 2006). "Boeing to Begin Ground Testing of X-48B Blended Wing Body Concept" (Press release). Boeing. Retrieved 10 April 2012.

mit.edu

web.mit.edu

Spakovszky, Zoltan (2009). "Unified Propulsion Lecture 1". Unified Engineering Lecture Notes. MIT.

dspace.mit.edu

Brian M. Yutko and R. John Hansman (May 2011). "Approaches to Representing Aircraft Fuel Efficiency. Performance for the Purpose of a Commercial Aircraft" (PDF). MIT International Center for Air Transportation.

nasa.gov

ntrs.nasa.gov

Dugan, James F.; Miller, Brent A.; Graber, Edwin J.; Sagerser, David A. (1980). "The NASA High-Speed Turboprop Program" (PDF). SAE International: 3397-34115. Archived from the original (PDF) on 24 July 2018.
Hager, Roy D.; Vrabel, Deborah (January 1988). "Advanced Turboprop Project". ntrs.nasa.gov. Retrieved 27 January 2022.

newscientist.com

Paul Marks (5 January 2019). "Green sky thinking". New Scientist.

nih.gov

ncbi.nlm.nih.gov

D.S.Lee; et al. (2021), "The contribution of global aviation to anthropogenic climate forcing for 2000 to 2018", Atmospheric Environment, 244: 117834, Bibcode:2021AtmEn.24417834L, doi:10.1016/j.atmosenv.2020.117834, PMC 7468346, PMID 32895604

pubmed.ncbi.nlm.nih.gov

D.S.Lee; et al. (2021), "The contribution of global aviation to anthropogenic climate forcing for 2000 to 2018", Atmospheric Environment, 244: 117834, Bibcode:2021AtmEn.24417834L, doi:10.1016/j.atmosenv.2020.117834, PMC 7468346, PMID 32895604

nytimes.com

Mike Tierney (25 November 2013). "Last Call for the Long Haul From Singapore to Newark". The New York Times. Retrieved 1 April 2016.
Giovanni Bisignani, CEO of the IATA (20 September 2007). "Opinion: Aviation and global warming". New York Times.

picturepark.com

ruag.picturepark.com

"Dornier 228 Advanced Commuter Brochure". RUAG.

pilatus-aircraft.com

"PC-12 NG Just The Facts" (PDF). Pilatus. 20 October 2015. Archived from the original (PDF) on 9 October 2016. Retrieved 27 July 2016.

researchgate.net

Park Y., O'Kelly M.E. (2014). Fuel burn rates of commercial passenger aircraft: variations by seat configuration and stage distance. Jrnl. Transp. Geog., 41:pp.137-147.
Ludovic Wiart; et al. (July 2015). Development of NOVA Aircraft Configurations for Large Engine Integration Studies. AIAA Aviation 2015, Dallas, TX. ONERA. doi:10.2514/6.2015-2254.

reuters.com

"SAS flies slower to save costs and emissions". Reuters. 20 May 2008.
"Airbus reports emissions data amid climate pressure". Reuters. 26 February 2021.

routesonline.com

Richard Maslen (20 February 2015). "WOW air Sources A321s for Transatlantic Launch". Routesonline.

ryanair.com

investor.ryanair.com

"Annual Report" (PDF). Ryanair. July 2016. p. 29.

saabaircraftleasing.com

"Saab 340A data sheet" (PDF). Saab Aircraft Leasing. 2009. Archived from the original (PDF) on 18 July 2013. Retrieved 20 December 2016.
"Saab 2000 data sheet" (PDF). Saab Aircraft Leasing. 2009. Archived from the original (PDF) on 14 July 2022. Retrieved 20 December 2016.

semanticscholar.org

api.semanticscholar.org

Timmis, A.; et al. (1 January 2015). "Environmental impact assessment of aviation emission reduction through the implementation of composite materials". The International Journal of Life Cycle Assessment. 20 (2): 233–243. doi:10.1007/s11367-014-0824-0. S2CID 55899619.

sherpareport.com

"Fuel Burn Rates for Private Aircraft". SherpaReport. 15 September 2015.

smartplanet.com

Mahony, Melissa (25 May 2010). "A sharkskin coating for ships, planes and blades". SmartPlanet. Retrieved 29 September 2012.

srs.aero

"Beechcraft 1900D: Fuel, Emissions & Cost Savings Operational Analysis" (PDF). Specific Range Solutions Ltd. 21 February 2012.

sunairlines.net

"Bombardier CRJ1000 Fuel Consumption". Sun Airlines. 20 August 2013.

team.aero

"CRJ family fuel-burn performance" (PDF). Aircraft Commerce. October 2009.
"Owner's & Operator's Guide: ERJ-135/-140/-145" (PDF). Aircraft Commerce. December 2008.
"Owner's & Operator's Guide: E-Jets family" (PDF). Aircraft Commerce. June 2009.

terrapass.com

Anja Kollmuss & Jessica Lane (May 2008). "Carbon Offset Calculators for Air Travel" (PDF). Stockholm Environment Institute. Archived from the original (PDF) on 31 December 2010. Retrieved 20 February 2017.

theflyingengineer.com

Mark Brouwer, Siddharth Srinivasan (10 November 2011). "Proud to fly a Turboprop: Q400 vs ATR72". The Flying Engineer.
Mark Brouwer, Siddharth Srinivasan (10 November 2011). "Proud to fly a Turboprop: Q400 vs ATR72". The Flying Engineer.

theicct.org

Brandon Graver; Kevin Zhang; Dan Rutherford (September 2019). "CO2 emissions from commercial aviation, 2018" (PDF). International Council on Clean Transportation.
Irene Kwan (3 June 2014). "Back to the Future: Return of the Turboprop?". The International Council on Clean Transport.
"U.S. domestic airline fuel-efficiency ranking 2017-2018" (PDF). ICCT. 12 September 2019.
Brandon Graver; Daniel Rutherford (January 2018). "Transpacific airline fuel efficiency ranking, 2016" (PDF). ICCT.
Brandon Graver; Daniel Rutherford (12 September 2018). "Transatlantic airline fuel efficiency ranking, 2017" (PDF). ICCT.
"Efficiency Trends for New Commercial Jet Aircraft, 1960 to 2008" (PDF). The International Council on Clean Transportation. November 2009.
Anastasia Kharina; Daniel Rutherford (August 2015), Fuel efficiency trends for new commercial jet aircraft: 1960 to 2014 (PDF), ICCT

transportenvironment.org

Peeters, P. M.; et al. (November 2005). "Fuel efficiency of commercial aircraft" (PDF). Netherlands National Aerospace Laboratory. An overview of historical and future trends

tudelft.nl

repository.tudelft.nl

Paul Peeters (15 November 2017). Tourism's impact on climate change and its mitigation challenges: How can tourism become 'climatically sustainable'? (PhD). TU Delft. p. 187.

volvobusenvironmentblog.com

Edward Jobson (12 September 2013). "Coach fuel consumption". volvo buses.

web.archive.org

"Performance > Speed". Aerion. Archived from the original on 20 November 2015. Retrieved 6 April 2017.
Marsh, George (8 April 2014). "Composites flying high (Part 1)". Materials Today. Archived from the original on 16 September 2015. Retrieved 23 May 2015.
Dugan, James F.; Miller, Brent A.; Graber, Edwin J.; Sagerser, David A. (1980). "The NASA High-Speed Turboprop Program" (PDF). SAE International: 3397-34115. Archived from the original (PDF) on 24 July 2018.
European Aviation Safety Agency; EAA (January 2019). European Aviation Environmental Report 2019 (PDF). EASA, EEA and Eurocontrol. p. 7. doi:10.2822/309946. ISBN 978-92-9210-214-2. Archived from the original (PDF) on 9 February 2019. Retrieved 26 November 2020.
Basic Principles of the Continuous Descent Approach (CDA) for the Non-Aviation Community (PDF), Civil Aviation Authority, archived from the original (PDF) on 9 November 2008
"The A380: The future of flying". Airbus. Archived from the original on 14 December 2007. Retrieved 22 March 2008.
"Modern, Quiet and Environmentally Efficient: Lufthansa Group Orders 59 Ultra-Modern Wide-Body Boeing 777-9X and Airbus A350-900 Aircraft" (PDF) (Press release). Lufthansa. 19 September 2013. Archived from the original (PDF) on 23 October 2017.
"AN-148/AN-158 family overview" (PDF). Antonov. 2017. Archived from the original (PDF) on 18 February 2018.
"Dornier 328-100 (TP)" (PDF). 328 Support Services GmbH. 2013. Archived from the original (PDF) on 13 April 2021. Retrieved 8 July 2018.
"Saab 340A data sheet" (PDF). Saab Aircraft Leasing. 2009. Archived from the original (PDF) on 18 July 2013. Retrieved 20 December 2016.
"Saab 2000 data sheet" (PDF). Saab Aircraft Leasing. 2009. Archived from the original (PDF) on 14 July 2022. Retrieved 20 December 2016.
"CS100 environmental product declaration" (PDF). Bombardier. 27 September 2016. Archived from the original (PDF) on 11 December 2016.
"ANALYSIS: A320neo vs. 737 MAX: Airbus is Leading (Slightly) – Part II". Airways News. 5 February 2016. Archived from the original on 6 February 2016.
"737 performance summary" (PDF). Boeing. 2007. Archived from the original (PDF) on 25 July 2014.
"Dornier 328-100 (TP)" (PDF). 328 Support Services GmbH. 2013. Archived from the original (PDF) on 13 April 2021. Retrieved 8 July 2018.
"PC-12 NG Just The Facts" (PDF). Pilatus. 20 October 2015. Archived from the original (PDF) on 9 October 2016. Retrieved 27 July 2016.
"Analysing the options for 757 replacement" (PDF). Aircraft Commerce. August 2005. Archived from the original (PDF) on 17 September 2012. Retrieved 16 July 2014.
"Kodiak Brochure" (PDF). Quest Aircraft. April 2014. Archived from the original (PDF) on 8 February 2017. Retrieved 20 February 2017.
Anja Kollmuss & Jessica Lane (May 2008). "Carbon Offset Calculators for Air Travel" (PDF). Stockholm Environment Institute. Archived from the original (PDF) on 31 December 2010. Retrieved 20 February 2017.
Vinay Bhaskara (25 November 2014). "UPDATED ANALYSIS: Delta Order for A350; A330neo Hinged on Pricing, Availability". Airways News. Archived from the original on 17 November 2015. Retrieved 28 November 2014.
"747-8 performance summary" (PDF). Boeing. 2010. Archived from the original (PDF) on 24 July 2014.
"767 performance summary" (PDF). Boeing. 2006. Archived from the original (PDF) on 15 April 2015.
"777 performance summary" (PDF). Boeing. 2009. Archived from the original (PDF) on 4 January 2014.
"747 performance summary" (PDF). Boeing. 2010. Archived from the original (PDF) on 25 July 2014.
DEFRA (2008). 2008 Guidelines to Defra's GHG Conversion Factors: Methodology Paper for Transport Emission Factors Archived 5 January 2012 at the Wayback Machine
Hank Green (8 October 2007). "Fuel Efficient Plane Prototype Hits Skies". Ecogeek. Archived from the original on 14 July 2014. Retrieved 6 July 2014.
Philip Lorenz III (3 July 2007). "AEDC testing brings unique blended wing aircraft closer to flight". Arnold Air Force Base. Archived from the original on 14 July 2014. Retrieved 10 April 2012.
"Technology Roadmap for Environmental Improvement - Fact Sheet" (PDF). IATA. December 2019. Archived from the original (PDF) on 29 June 2020.
Graham Warwick (6 May 2016). "Problems Aerospace Still Has To Solve". Aviation Week & Space Technology. Archived from the original on 2 January 2018. Retrieved 2 January 2018.

worldbank.org

documents1.worldbank.org

Bofinger, H.; Strand, J. (May 2013). "Calculating the carbon footprint from different classes of air travel" (PDF). Development Research Group, Env. & Energy Team. World Bank. p. 40.

wsj.com

Scott McCartney (12 August 2010). "A Prius With Wings vs. a Guzzler in the Clouds". Wall Street Journal.