No-emission electric motors which began the automobile revolution are the technology of tomorrow for cars. But today's batteries can't support the typical driving experience. Chevy's Volt is a nice compromise. The sedan has an electric motor with a battery that can provide up to 40 miles (about 65 km) of range on a single charge. A gas engine kicks in to recharge the battery while you're driving. Since nearly 80% of us drive less than 40 miles a day, that means that unlike the Prius, the Volt could get drivers off gas altogether. The best of both worlds lands by the end of 2010.
See the history of the electric car.