Want to see how cars might run 20 years from now? Look no further than Corgi's H2Go, a toy car that runs on the most common gas in the universe: hydrogen. That's right, this tiny remote-control vehicle runs on an hydrogen fuel cell, a technology that's so far been elusive to automakers the world over. A solar-powered refueling station creates H2 from water, making the whole system as green as can be. Makes you feel all warm and fuzzy about the future, doesn't it?