Great point WNC Observer!

The discussion on ethanol/biodiesel needs to become more nuanced in this regard. The current corn/ethanol thing is eclipsing sane debate on appropriate uses of alt fuels in the transition to No Cheap Oil.

Corn/ethanol is evil, evil, evil. "The Omnivores Dilemma" was a nightmare tale about King Corn, as it is, but it was published before the Corn/ethanol death spiral got in the headlines big time.

I would like to see some more definitive numbers (and real life stories), from real farmers (farmer Rick Munroe?) on just how much canola or other oil seed crops (or even hemp seed) they actually would need, for farm ONLY equipment. How much home grown bio-fuel per arce or per yield weight of food crop.

Example: I grew 20 tons of potatoes with X amount of home grown bio-fuel.

I don't farm on a big scale, but city folks are going to need someone growing food on more than the raised bed - hand dug scale to support their life style.

It would also be pretty hard to implement this farm equipment ONLY policy unless real laws existed and were ENFORCED.

Would farm ONLY biofuel be taxed? If not, what's to keep Joe farmer from filling up the in-laws gas tanks when they drop by? 'Off-Road' diesel is already highly abused from a tax stand point. People using back-hoe diesel in the family diesel car or truck on the highway, quite a savings in fuel cost over buying the stuff with a stiff tax on it.