I agree, it's misleading marketing speak lobbyist crap That said on a multi year timescale ethanol is far more efficient in terms of carbon output per joule si

I agree, it's misleading marketing speak lobbyist crap That said on a multi year timescale ethanol is far more efficient in terms of carbon output per joule since much of the carbon released was captured when the corn was grown so the only net carbon output is from the fossil fuel portion of the fuel. It's similiar to the argument for why heating with wood is better for the environment in the long term.