I mentioned this at last night's meet, and nobody had heard of it, so here it is...
If you are here from the Walmart thread, we need to make larger Lithium Ion batteries, not WAR(for oil)! (the car uses something like 10,000 soldered together small li cells they use for laptops because nobody makes anything bigger. But they saved weight, and gained power by moving to Li from lead acid.
I really want one of these....
http://www.acpropulsion.com/tzero_pages/tzero_home.htm