It's not easy being green
Bio-fuels of various stripes have been flogged as a green, renewable energy for years. They are neither. I have never seen "positive net energy" math for bio fuel - be it ethanol, bio-diesel, or an exotic alternative.
Resource Insights recently pointed out that some throwback ungenius believes we should use trees for fuel; Mobjectivist links to a quote that lays out the facts on corn-pone ethanol with clarity. Generating ethanol is a significant net loss of energy. Also noted on Mobjectivist is this topic is a prime wedge issue for us to interject some sanity into the American discourse.
"Ethanol subsidy discussions will work as a stealth issue to eventually corner the right-wing into admitting that we cannot contine as an one-trick-pony oiligarchy. "
The fundamental falsehood of bio-fuel is helping to obscure the reality that at present we have no way to "wean ourselves off of foreign oil."
I also understand that ethanol and the like spring from the sincere desire of people to have an alternative to grubby old petrol. I can only imagine the angst when one hops into a gas powered automobile to run to Wal-Mart for some cheesy poofs.
Bio-fuels aren't green, they are worse than oil.