ROGER IS POWERING VEHICLES WITH BUSHELS, NOT BARRELS. CORN GRO WS IOWA. There's no stop in this crop. Last year lowa farmers produced 1.5 billion bushels of corn for ethanol production. Resulting in 4.3 billion gallons of a cleaner burning fuel. IOWA CORN GROWERS ASSOCIATION WASHINGTON COUNTY ROGER IS POWERING VEHICLES WITH BUSHELS, NOT BARRELS. CORN GRO WS IOWA. There's no stop in this crop. Last year lowa farmers produced 1.5 billion bushels of corn for ethanol production. Resulting in 4.3 billion gallons of a cleaner burning fuel. IOWA CORN GROWERS ASSOCIATION WASHINGTON COUNTY