Chevy Volt

This is the plug-in Chevrolet Volt. Plugging the car in at night charges the lithium-ion battery. It also gets a charge from a small onboard gas motor. General Motors won't let you take this prototype on the road, though.

GM brought a prototype of its Chevy Volt and the Equinox, a hydrogen-powered SUV, to the Hollywood Goes Green conference this week. The company is developing vehicles that use a variety of alternative fuels, including electricity, solar energy, and hydrogen.

December 14, 2007 10:41 AM PST

Photo by: Michael Kanellos/CNET News.com