Here's another option on the way, using compressed air as a power source - On the road with the Airpod air-powered car (Guardian May 14th 2009)

..."While Negre's air cars have similar carbon emissions to electric cars (it all depends how the electricity to power the pumps that fill their air tanks is generated), he argues that air-power is a superior technology. "Compared to electric cars, air-powered cars cost a fraction of the price to buy, they don't need expensive batteries to be replaced every five years or so and crucially they take only a fraction of the time to recharge."