My experience has been that you lose easily. the 10% in mileage and power loss. I would just as soon the only gave me 9 tenths of a gallon for the gallon price. seems to be the same effect. Truthfully, there was a huge rush as stations put up banners stating that they had only 100% gas and vowed to keep buying it as long as it was available. Soon, the ethanol stations were empty and now I think you would be hard pressed to find a station in town selling the hybrid fuel mix. I don't fully understand the push. It is supposed to take a tremendous amount of water to manufacture and as I have been told, uses more energy to make than is saved by using it.
