Slideshow: Cars of the Automotive X-Prize

Aptera 2e photo

The race is on to build a 100 mpg car. The X-Prize Foundation has ponied up $10 million for the team that can win the race, and prove that their car is economically viable for full-scale production. Check out our slideshow of the hybrids, EVs, and air cars that are making automotive history X.

Cars of the Automotive X-Prize

Listen to the man behind the X, Peter Diamandis, on TreeHugger Radio.