Overlooked in this discussion is the fact that Ethanol is used as an oxygenate in gasoline to replace MTBE's, which are a known carcinagen.
#2 Yellow Corn, which in the past, was used primarily for animal feed, can now be distilled into Ethanol and the by-product, Dried Distillers Grain (DDG) is fed to livestock.
How about using replacing it instead with a blend of heptane and octane?