Chris Neiger (15. listopad 2013.). "Solving electric cars' quiet problem". BBC Autos. [R]ival schools have emerged. The first argues that EVs should remain quiet, void of any added sound. The second believes that these vehicles pose a risk to pedestrians and cyclists because they may creep up, ostensibly unannounced by a gurgling engine.
Wes Siler (20. travanj 2010.). "Electric Motorcycles Buyer's Guide". [S]ilence is actually a bonus; you can hear danger approaching and you become more a part of your environment.
Damon Lavrinc (5. studeni 2013.). "Zero's New Electric Motorcycle Boasts Insane Torque, Expandable Range". Wired. Torque [is] in line with some of the biggest, brashest, and beefiest bikes in the world. But unlike those bruisers and cruisers, the SR tips the scales at a relatively svelte 400 pounds. High grunt and low mass let you hit 60 mph in 3.3 seconds.
