Ethanol is a big industry in the US, here is some data directly off of the American Alternative Fuels site:
Ethanol
Ethanol is an alcohol-based alternative fuel produced by fermenting and distilling starch crops that have been converted into simple sugars. Feedstocks for this fuel include corn, barley and wheat. Ethanol can also be produced from "cellulosic biomass" such as trees and grasses and is called bioethanol. Ethanol is most commonly used to increase octane and improve the emissions quality of gasoline. In some areas of the United States, ethanol is blended with gasoline to form an E10 blend (10% ethanol and 90% gasoline), but it can be used in higher concentrations such as E85 or E95. Original equipment manufacturers produce flexible-fuel vehicles that can run on E85 or any other combination of ethanol and gasoline.
The molecular structure of Ethanol is (CH3CH2OH)
The Molecular structure of Methanol is (CH3OH), methanol can be derived from fermented wood products or from Natural gas products. There is not a lot of difference in the two.
The web site is
http://www.afdc.doe.gov/altfuel/eth_general.htmlIt is interesting reading
Cheers
Jock