Corn is the simplist solution. Every year the feds buy up tons of corn fromt he farmers then destroy it. We produce enough corn in MN alone to create enough fule for most of the country. It is aready being used in pumps marked E85, the plan is to thin the gas down more with ethenol over the next couple of years and you will see new cars coming out that are rated to burn the stuff. You are going to see new pumps with higher ethenol content. If someone would take the time to come up with an additive so those of us that can't afford to run out and buy a new car that can actually burn high ethenol content fuel we be headed int he right direction. Ethenol burns hot without offering much for lubrication, not a good idea to burn it in older vehicles.