I don't agree on taxing the heck out of it just to pay for other, non-viable programs. If these programs were viable, they wouldn't need help from MY tax dollars to be competitive .
They only need help now to get started and up and going. Sure, five years ago the price of ethanol was higher than oil, and, as you say, it was "non-viable", but only because there wasn't the scale to produce the efficiencies that made it competive.
Ethanol is still really in it's infancy now as well. We get ethanol today mostly from corn, because that is a cheap way to get it. We COULD get if from other things as well. We COULD get it from wood chips. (There is one significant size wood-chip ethanol facility in Pennsylvania right now that is cost competitive with corn. But it's more expensive to build that kind of facility).
We COULD get ethanol from algae. In fact, there are small scale prototype plants working the bugs out now with that process. But it's not ready yet for industrial scale production. That may take another decade before Algae ethanol is cost competitive.
And we COULD get ethanol from other crops. Grasses (switch grass) has been discussed. There is a brand new barley ethanol plant in Virgina. There are a variety of second generation ethanol plants being built or in the planning stages.
But the key to all those, is that you have to have adiquate demand to start with. You have to have the infrastucture built in order to have the demand for ethanol, that makes the scale of production worthwhile and cost competitive with oil.
Today, corn ethanol is cheaper than gasoline. It wasn't five years ago.
But ethanol from wood chips, from garbage, from sugar cane, and switch grass, are all slightly more expensive to make, while the technology is young, and the industrial scale isn't there.
It will be, in good time. All in good time.
Provided, of course, that the Oil industry doesn't sabatage the development of competition.
Remeber this- the Model T Ford began as a flex-fuel car. It was designed to run on ethanol, and gasoline was an after-thought. But in the 1920's, with prohibition, alcohol became more expensive than gasoline, and the Model T turned into a gasoline powered car instead.
Henry Ford was right. Ethanol was the right fuel.