Shah, Saurin D. (2009). „2”. Plug-In Electric Vehicles: What Role for Washington? (1. izdanje izd.). The Brookings Institution. str. 29, 37 i 43. ISBN9780815703051.
Shai Agassi (02.2009.). Shai Agassi's bold plan for electric cars. Long Beach and Palm Springs, California: TED conference. Event occurs at time 4m10s. Pristupljeno 01.11.2011. »See we're bound by today's technology on batteries, which is about 120 miles if you want to stay within reasonable space and weight limitations. 120 miles is a good enough range for a lot of people. But you never want to get stuck. So what we added as a second element to our network is a battery swap system. You drive. You take your depleted battery out. A full battery comes on. And you drive on. You don't do it as a human being. You do it as a machine. It looks like a car wash. You come into your car wash. And a plate comes up, holds your battery, takes it out, puts it back in. Within two minutes you're back on the road. And you can go again. If you had charge spots everywhere, and you had battery swap stations everywhere, how often would you do it? And it ends up that you'd do swapping less times than you stop at a gas station. As a matter of fact, we add it to the contract. We said that if you stop to swap your battery more than 50 times a year we start paying you money because it's an inconvenience.«
