Ethanol has been a fuel for automobiles from the start of the industry. In 1896, Henry Ford built his first car, the Quadricycle, to run on ethanol. His Model T, which revolutionized auto manufacturing when it rolled of the assembly line in 1908, was designed to run on ethanol or gasoline. Even as Ford continued to push for ethanol from corn as the logical fuel, lower priced gasoline won out. The oil shocks of the 1970s revived the idea of ethanol as an alternative fuel, and the corn-based version is now blended into 90% of the gas Americans use...