The grain required to fill a 25-gallon SUV gas tank with ethanol, for instance, could feed one person for a year. If today’s entire U.S. grain harvest were converted into fuel for cars, it would still satisfy less than one-sixth of U.S. demand.
While it’s nice to see GM trying to save the world, they are heading in the WRONG DIRECTION with corn-based ethanol. It is not sustainable. It may mean that we’re less dependant on the Middle East, but it means were more dependant on somewhere else. Not a solution to the problem, just pusing the problem off into the future.