Electric Sports Car 138 MGP, no maintenance for first 100,000 mi.
Excellent articl at this site that shows differences (and charts) the total "green" footprint of different fuel types.
Electric generating turbines (maybe some day wind or geothermal powered) are extremely efficient. 3 phase superconductive motor (70 pounds and size of backpack incuding transmission) is high horse power and has extreme efficiencies.

B.T.W. Hydrogen - some people think it comes from water? What a joke! only 0.2% comes from water. 99% of the hydrogen comes from COAL. And the efficiency is very poor. It is just a federal subsidy for the COAL industry.