And how much cash welfare subsidies do the farmers and oil companies get to produce ethanol?
There are better ways to produce ethanol that do not compete with food crops.
And as far as "subsidies" go, the US military presence in the Middle East and the invasion of Iraq has pretty much amounted to a 2 trillion dollar subsidy on oil...in the form of debt... that our great grandchildren will have to pay off.
If we "paid at the pump" for the ongoing costs of the war, gas would probably be $9 or $10 a gallon, which makes alternate sources of ethanol (algae, biomass, hemp etc.) start looking feasible. But that would require innovation and new ways of thinking. Its much easier to just keep borrowing money and fighting wars and bitching about $3 per gallon gas for our SUV's.