Check out this water-powered RC car
 

An updated version to a really cool science toy, the i-H2GO is a water-powered remote control car that will survive the death of fossil fuels. Engineers have been trying to build water-powered vehicles on and off for years. By drawing energy directly out of the water, an H2O-engine could revolutionize our fossil-fuel dependent world.

http://vr-zone.com/articles/check-ou...powered-rc-car