Ethanol and Bio Diesel
Some people see ethanol as man's best friend.
But it takes a lot of energy to make ethanol. I think it would make more sense to put corn in a biogas plant and make methane. If you put corn in a gasifier you could burn the stocks, leaves and cobs as well as the kernels. While you're at it you could run the corn syngas through a system with steam and a copper, zinc oxide and alumina catalyst to make methanol. 
Copyright 2007 Dan Craig
Drive in comfort through the palm oil farms
of beautiful Amazonia in your Bio-Diesel car!
Rudolf Diesel
"The use of vegetable oils for engine fuels may seem insignificant today. But such oils may become in course of time as important as petroleum and the coal tar products of the present time."
Diesel's original engine ran on powdered coal.
Los Angeles Times Dec. 12 2008
California approves measure to limit diesel air pollution

Biofueled Jumbo Jet