Level of use of external energy sources differs across societies, along with the convenience, levels of traffic congestion, pollution sources and availability of domestic energy sources. (sciencedaily.com)
Hydrogen fuel cell technology allows the Honda Clarity to run on hydrogen from domestic energy sources instead of gasoline, making it one of the cleanest cars on the road. (earthtimes.org)
By boosting the amount of renewable, domestic energy sources used to generate the country's electricity, the DOE may be aiming to accomplish two goals: (1) ensure that electric vehicles live up to their full, low - carbon potential, and (2) reduce net oil imports, which are significant. (getsolar.com)