There was a program on
http://www.americanvoiceradio.com awhile ago, that had a guest discussing the "hydrogen" fallacy, and running on Ethel Alchohol..remember Ethanol?? Wish I could remember the show and the guest, but his suggestion(s) seem viable.
For one, building a distillery is relative inexpensive, and one can use many different substances to distill a 190 proof "fuel".
He did mention that it's easier to "start" you engine on gasoline, then switch over to the 190 after the engines "warmed" up. Just starting the vehicle on gas, the tank would probably last for a few months.
He also mentioned that a carburated vehicle, one would have to change out the plastic float in the carb with a brass one. And also the tank for the 190 should be plasctic or fiberglass, don't use steel or aluminum. I think he mentioned to also change the rubber hoses to st/stl.
Wish I paid more attention, but that's the jist of it...sounds like a worthy research project....