It is a gigantic scam.
It takes more energy to produce it than you end up saving in the gasoline it replaces.
We burn an incredible amount of corn to make Ethanol, which has
increased food prices around the world.
And now it's gonna be hard as hell to stop making it because midwestern states/swing states who make corn for Ethanol get billions of dollars from the Government to do it, including Iowa, a major Primary state, and any politician who declares an end to Ethanol subsidies will have a very hard time winning in Iowa, which is a very big deal in the Presidential election.
There's a reason the private sector didn't turn Ethanol into a major industry on its own.