On PopSci’s DIY, Dave Prochnow has a piece on how to convert a battery-powered RC Hummer into a vehicle that runs of hydrogen fuel cells.
Fuel Cell Car & Experiment Kit Our Price: $149.95 Assemble and experiment with a unique reversible hydrogen fuel cell. This fuel cell kit provides a playful introduction to one of the most significant technologies of the 21st Century. With this kit, you can build a model car that actually runs on water! 96-page full-color book. Ages 12 and up. By Thames & Kosmos.