Originally posted by Rondec Ethanol isn't eco friendly and doesn't help the environment. It is not even worth making without serious government subsidies. Basically, ethanol got supported because it sound good in politicians speeches by "getting us free from dependence on foreign oil." It doesn't work, unless you can make it from other sources than corn (for example, switch grass) that don't require heavy cultivation, fertilizers, etc.
More than half of Brazil runs on ethanol since 1970, despite the fact we have more petrol available than the internal market would potentially consume. So it's not like we use it to be independent from foreign oil. Also, our ethanol is made from sugar cane, not corn, so ethanol is just one of the byproducts - others being sugar, biomass and other byproducts that get used for textiles and stuff.
That said, big extensions of native forest are destroyed to grow cane, so I would much prefer smarter energy sources.