Trains are diesel/electric, dude:
Diesel locomotive - Wikipedia, the free encyclopedia
Quote:
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In a Diesel-electric locomotive the Diesel engine drives an electrical generator whose output provides power to the traction motors. There is no mechanical connection between the engine and the wheels.
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And they AVERAGE
436 miles / gallon / ton
http://www.factcheck.org/askfactchec...ly_move_a.html
Sure, they've got ultra low rolling resistance, but I very much doubt they are very aerodynamic.