There's a company that's been working on swappable car batteries for some time now: http://www.betterplace.com/ http://www.betterplace.com/ I agree with you t

There's a company that's been working on swappable car batteries for some time now: http://www.betterplace.com/ http://www.betterplace.com/ I agree with you that this is the only realistic mainstream future of electric vehicles as long as batteries remain in their current low-density state.