Aaron Smith, writing at The American, reminds us that though ethanol subsidies have expired, the Renewable Fuel Standard remains firmly in place:

Deficit hawks, environmentalists, and food processors are celebrating the expiration of the ethanol tax credit. This corporate handout gave $0.45 to ethanol producers for every gallon they produced and cost taxpayers $6 billion in 2011. So why did the powerful corn ethanol lobby let it expire without an apparent fight? The answer lies in legislation known as the Renewable Fuel Standard (RFS), which creates government-guaranteed demand that keeps corn prices high and generates massive farm profits. Removing the tax credit but keeping the RFS is like scraping a little frosting from the ethanol-boondoggle cake.
The RFS mandates that at least 37 percent of the 2011-12 corn crop be converted to ethanol and blended with the gasoline that powers our cars. The ethanol mandate is causing corn demand to outstrip supply by more and more each year, creating a vulnerable market in which even the slightest production disturbance will have devastating consequences for the world’s poor. It is time for the federal government to stop requiring cars to burn food. [Emphasis added]

It’s kind of like a shell game.