This Hydrogen Fuel Cell RC Car Upgrade Kit is one of the coolest RC cars kits I have seen in a long time. It is pricey though, hopefully when these hydrogen fuel cells become more common place the price will come down to earth.
The H-cell is a unique integration upgrade kit for electric hobby R/C cars, designed as a drop in unit that can fit inside widely available Tamiya TT-01 type chassis. The H-cell system designed by Horizon Fuel Cell Technologies includes a 30W air-cooled, air-breathing and self-humidified PEM fuel cell stack
with integrated bright blue light-emitting fans and a sleek aluminium casing. The integration kit also includes electronic controls, a miniature pressure regulator and three 10L metal hydride canisters in a hydrogen storage rack. At maximum power output and with a single charge, the H-cell can run the car at 35 km/h for over 1 hour, as opposed to just 15 minutes with the conventional Nimh battery. Learn more.