I honestly don't get why all the first world countries of the world don't do more stuff like this. Agriculture is nothing close to a free market anywhere, but its all state involvement behind the scenes before you are presented with what looks like price competition and unbridled capitalism on store shelves.
Except for milk, which stands out as being price regulated in the US. The largest exception I know of.
If taxpayers are going to subsidize farmers to grow tons of excess corn, at least give everyone a cob or two a week instead of using it to dilute gas for no reason.