Methanol is a losing cause.
It takes more energy to make it than you can recover.
BD, on the other hand, has a positive energy ratio.

There are many non food item feedstocks available and they supply much higher gallon/acre yields than corn. Algae, palm, and camelina to name a few. All can be grown on land currently not used for food production.
Additionaly, the press cake is a good high protien animal food.