8 fuel-saving car technologies
Still out there, like the Golden Fleece or the alchemist turning lead into gold, is the fuel cell. That technology allows vehicles to turn hydrogen into electricity to power the vehicle with water as the exhaust product. Currently in the United States, only Honda sells such a vehicle, but is limited to a special lease program in California.
Pictured: The hydrogen-powered 2011 Mercedes-Benz F-CELL.