36% is used for animal feed. It takes 22 pounds (10Kilos) of corn to make one gallon of ethanol and uses more energy to make it than is created when burned. It is quite inefficient as an engine fuel compared to gasoline. It's carbon dioxide product is slightly less than gasoline, but more is needed to travel the same distance. IOW, using ethanol as a clean alternative fuel is a government scam, paid for by the corn industry lobby. I could go on, but I don't want to bore you.