Well, I am neither a tree hugger nor a corn farmer, but some advantages of E 85 might be:
1) it is renewable
2) our petro dollars stay in the USA, instead of Venezuela, Saudi and Mexico
3) it has 103-105 octane at under $4 gallon
4) it burns very cool and clean
Although ethanol is hated by many here, the US is using 300 million gallons per day of gasoline, so an alternative will have to be found sooner or later. Would like to see sugar beets or something besides corn used along with blender pumps E0, E10, E30, E85 so the consumer could choose, instead of an across the board mandate.