Just read recommendation to allow E15 fuel to be sold. Yes you say it is for 2001 or later highway vehicles. Do you assume that retailers can afford the tanks and pumps to also carry fuel for older and Marine products? Is it cheaper or more expensive for refineries to blend several types of fuel rather than one? Whats happens when the public realizes that they get less fuel Mileage on E fuel? When we figure out how to do this with kudzu or other product not consumed by humans or livestock only then maybe.