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Electric swap stations (eg. http://www.youtube.com/watch?v=yfdYU7gk8fs) strike me as one of the most promising concepts for electric vehicles. Imagine if rather than ever owning a battery you're just perpetually rent the use of one (perhaps with a small per-swap fee). Alas it would seem we're still many many years away from seeing anything like this rolled out in a real way.


Tesla seems to be going in the opposite direction, making the battery pack a structural component.


Definitely. Better place does this, and charges on a per mile basis (in Israel) http://en.wikipedia.org/wiki/Better_Place




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