And as Jay Leno volunteered in a recent interview, the more alternative energy cars there are, the more oil there will be to power vintage sports cars, like Austin Healy's, MG's, Porsches, etc. Leno conveniently didn't mention this one in his stable:
http://www.autoblog.com/gallery/jay-lenos-tank-car-at-pebble
Guestimates; about 3 mpg.
But he's right.
Sherwood