Ditto for other green energy boondoggles. Corn ethanol has been touted as an alternative to oil, but if you consider the energy needed to plant, harvest and ship the corn to ethanol plants as wells as make the corn into ethanol and ship the ethanol by truck or rail since it can’t be shipped by pipeline it takes more energy to make corn ethanol than you could get from using it as a motor fuel. The whole ethanol business exists solely because of government subsidies and tax credits.
And that doesn't even consider the increase in food prices because of arable land being diverted to feedstock for ethanol.
On a per-acre basis, corn only produces half the ethanol that can be produced from sugar cane. Economically, it's not viable without government subsidies and mandates.
Not to mention the corrosive nature and the increase in cost to us for some dang corn flakes for breakfast.