Digging up new soil to farm corn apparently releases enough CO2 to eat up 30 years of savings from ethanol. And even after that we're talking about a reduction of 2% of total emissions from vehicles, and that's if you believe the good numbers and I've got my doubts.
At some point in the future when gasoline is more expensive, someone will figure out how to do the full ethanol cycle efficiently, and you'll be able to tell it's working because they'll stay in business without government subsidy.
https://www.youtube.com/watch?v=F-yDKeya4SU
Digging up new soil to farm corn apparently releases enough CO2 to eat up 30 years of savings from ethanol. And even after that we're talking about a reduction of 2% of total emissions from vehicles, and that's if you believe the good numbers and I've got my doubts.
At some point in the future when gasoline is more expensive, someone will figure out how to do the full ethanol cycle efficiently, and you'll be able to tell it's working because they'll stay in business without government subsidy.