Stanford Ovshinsky's Hydrogen-Powered Hybrid Prius Car, 2009

The Prius pictured here is not your typical gasoline-electric hybrid car. Stanford Ovshinsky, an innovator for renewable resources, replaced the standard gasoline fuel tank with a hydrogen fuel tank. The change from gasoline to hydrogen fuel results in a vehicle that releases only water through the exhaust instead of carbon monoxide, carbon dioxide, and oxides of nitrogen.