Corn derived alcohol is complete waste of time. It ultimately takes more energy to produce A gallon than you can get out of it. Plus with the farm subsidies, it a huge boondoggle.

A MUCH better alternative would be to derive from switch grass or hemp. Faster growing and does not need the fertilizers and such that corn does. Plant once and continually harvest.

Of course the best option of all is lots of nuclear plants and purely electric vehicles. But were not ready for that yet on a huge scale.