One of the problems with fuel ethanol is that there simply can’t be enough production to replace a majority of oil-based fuel. That’s as true in Brazil as it is in the US.
I think one ethanol backer admitted that it would take every acre of arable land in the US to be used for ethanol crops to truly make a dent in the volume of oil used.
I just want my good old 100% Petroleum based gasoline back.
Other than eating or feeding to livestock the best use for corn is the production of illicit, untaxed alcoholic beverages.