If you've been following the development of Tesla's first production car, the Roadster, you probably already know that it can do up to 240ish miles on a charge -- or an awful lot more in perfectly ideal conditions. Cumulatively, though, they can go much, much further. Tesla has sold around 1,500 of the things since they were introduced in 2008, and the company is able to keep track of just how far each has covered.
