Burn it directly.
This isn't quite the place for this topic, since it's not quite a gasoline engine, but...
Making ethanol from corn wastes roughly 3/4 of the energy just processing the stuff. Make a car like this:
1. battery-electric drivetrain
2. corn burning stove
3. steam engine or stirling engine
Hey, you could run it on coal pellets, which is even cheaper, if you want. Corn costs less than 1/4 the price of gasoline, per energy. The steam/stirling cycle engine might be kind of heavy, but the batteries would give the extra power to move the best when you need to.
This isn't quite the place for this topic, since it's not quite a gasoline engine, but...
Making ethanol from corn wastes roughly 3/4 of the energy just processing the stuff. Make a car like this:
1. battery-electric drivetrain
2. corn burning stove
3. steam engine or stirling engine
Hey, you could run it on coal pellets, which is even cheaper, if you want. Corn costs less than 1/4 the price of gasoline, per energy. The steam/stirling cycle engine might be kind of heavy, but the batteries would give the extra power to move the best when you need to.