Ethanol a waste of time for automobiles?

Do ethanol fuels require more energy to create than they produce? That is the point of a few new studies by Cornell and U.C. Berkeley which indicate that the most efficient biofuel grain, soybeans, takes 27% more energy to turn it into biofuel than the amount of fuel the process produces. Corn takes 29%. "Ethanol production in the United States does not benefit the nation's energy security, its agriculture, the economy, or the environment," according to the study by Cornell's David Pimentel and Berkeley's Tad Patzek, cited in the DetroitNews.