I know you've specifically discounted me
but (a) electrickery doesn't have to be generated from dead ferns and mammal-like reptiles, and (b) in theory at least, making fuel cells and running electric motors with them is considerably more efficient than asploding fuel in an internal combustion engine.

Just ... you know ... less VRRRUMMMMM! VRRRUMMMMM!
( Dr. Shambolic je suis charlie, Tue 26 Aug 2008, 18:46, archived)