Where are the lithium powered cars?

Lithium: Good enough for Mars but not the streets of America?

According to NASA and JPL, lithium-ion batteries have proven to be extremely reliable and effective, and these batteries have helped the Mars Rover far exceed the expectations of many Rover engineers.

Entrepreneurs and backyard mechanics have converted conventional vehicles in to electric vehicles and hybrid vehicles into plug-in hybrid vehicles without the massive R&D budgets of the major automakers. Yet, all of the major automakers are years away from mass-producing lithium powered automobiles.

Finish: Where are the lithium powered cars?