Amount of food used for ethanol biofuel

I saw a pretty amazing stat while reading an article on the Washington Post a few days ago. "A tank of standard, U.S. corn biofuel blend, called E10, contains enough calories to sustain an adult man for 11 days.". (article at http://www.washingtonpost.com/wp-dyn/content/article/2008/06/17/AR2008061702268_2.html). E10 is only 10% ethanol, so it's pretty staggering that 10% of a full tank uses this many calories.

The gas stations that I go to in Virginia all use an E10 blend, I'm not sure if gas stations in other states use E10 or not. The pumps will have a sticker on them saying that the fuel is a mixture of 10% ethanol. E10 can be used safely in all vehicles, so that is why E10 has become so widely used. With all of this corn being used for biofuels and not for food, do you think it's a coincidence that food prices across the globe have skyrocketed? Just think, about that the next time that you fill your tank up.

GM is really pushing their cars than can use E85 gas. If 10% ethanol blend has something to do with the increased food prices, just think what widespread use of 85% ethanol will do.