You can build your own 190-proof still that'll produce about 7 - 8 gallons per hour for less than $500. You'll need a federal permit for making alternative fuel, which is around $40 to make up to 10,000 gallons per year. The big thing is that you need to convert your fuel system for ethanol, and that's PURE ethanol. With the VX, you'll need to make some plumbing changes to ensure that there are no materials in contact with the ethanol that can be degraded or corroded. Like replacing the seals and such, like injector o-rings, with parts made from Viton. You'll also need to replace the injectors with ones that can flow about 30% more volume than stock.

The OEM ECU should be able to figure the rest out, but then you're limited to traveling no further than you can either return to your fuel source or what you can carry.

You could make similar changes to run on E85, but you can't make that at home. Unless, of course, you're a chemist with a backyard refinery.