That should be enough to get him to South Dakota, where he can pick up some more corn-cob ethanol from POET before heading further east.

FORBES: Taking A Ride In A Corn-Cob-Powered Truck

America's ethanol subsidy, which has led to a huge rise in production, rocketing maize prices and consequent rioting in Mexico, is the sharpest example of why government should not pick winners: once the fertiliser and fuel used in corn production are taken into account, ethanol is probably not much greener than petrol.

ECONOMIST: Climate change