Is the gas industry about to be overtaken by a host of cleaner , leaner rivals ? Cars running on hydrogen are expected to be on sale in the U.S. and India by 2010 . French # ##ing has developed a solar cell concept that powers an electric vehicle .
Is the gas engine about to be overtaken by a host of cleaner , leaner rivals ? Cars running on air are expected to be on sale in the U.S. and India by 2010 . French motor company has developed a solar car roof that powers an electric motor .