Honda FCX Clarity

Automakers are so excited about hydrogen-powered cars that they're building real working production models to put into consumers hands. That's Honda's plan with the FCX Clarity. Yes, it's powered by a hydrogen fuel cell, which powers electric motors to propel the car. The FCX will be crash-tested and meet all federal regulations before it hits the streets. It will also get a window sticker that shows EPA adjusted mileage figures, which Honda says will be 68 mpg.