Henry Ford was quite a bit of a Socialist too. Not sure I'd quote him as an authority on much.
Sure, we can produce alcohol, and it's easy enough to grow stuff to make into it, but cost-effective, it is not.
And, seeing as how our farmland is being turned into idle land at fantastic rates by the eco-freaks, who seem determined to stamp out agriculture, forestry, and eveyr other form of providing anything in this country, "renewable" is no longer possible. I could be, I suppose, that the green's obsession with stamping out all farming, ranching, logging, mining, hydropower, power generation, nuclear power, and use of our natural resources in any form, might suddenly evaporate if they were allowed to grow pot. Or hemp. (Actually, they haven't the faintest interest in hemp, they just want pot. ) In fact, the memberships of the radical green groups and the "legalize pot" crowd are almost identical. Many of them have tried to stop farming in many places, and have promoted efforts to get the goverment to buy up farmland and forever lock it away into "wildlife preserves" to gaurantee it will never be useful to man. On occaision, they have proposed government purchase of vast areas of farmland to have the GOVERNMENT grow hemp.
Oh, did I say Ford was a Socialist?
Seems some things don't change much...