I can't help but put my two cents in...
IMHO, I prefer the food usage scenario, even if less efficient than gasoline, for two reasons:
1) I can raise my own food, and so be independent of Big Oil. And no, I don't currently raise my own food... but I could...
2) Food is much more likely to be around 100 years from now, whereas I find it unlikely that gasoline will be.
Thanks!
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The Silver Sipper:
The Black Beast:
Dodge Ram 2500, Gasoline V10, 4X4, Auto
Best MPG recently was 9.8 since improving driving habits; 8.3 before that.
Resigned to hauling only, now that I secured the Prius.