Step inside the Raht Racer, a three-wheeled vehicle that looks a little like a simplified version of the Batmobile, and you'll start to pedal like you're riding a bicycle. But as you feed power to the electric motor inside, the bike also senses how hard you're pushing. Pedal hard—or flip on an automatic mode, if you don't want a workout—and the bike will travel up to 100 miles an hour on the highway.
Image: http://www.fastcoexist.com
