Hey, Genius. Do you think those tractors are just sitting idle unless they're producing corn for ethanol? Naw. I reckon they're out there in the fields burning fuel whether they're producing corn for livestock feed or for feeding SUVs.
Listen Slick, the point here is that it takes MORE energy to produce ethanol than the energy value of the ethanol itself. If you want to rake leaves and then re-spread them be my guest.