Chad, if you want to run a generator on VO (W or S) check into the Listers or Listeroids which are low RPM, agricultural-type engines. They are relatively quiet compared to the standard, high RPM types. There are a number of sites devoted to them and many threads about running them on VO. Hook it up to a powerhead and your ready to get off grid.
If I weren't smack dab in the middle of suburbia, had the time to collect, filter and room to store the stuff, I'd consider it. I have given thought to something like that for our camp in Maine, though.
Any other news yet?
http://www.f1-rocketboy.com/lister.html
http://listerengine.com/smf/index.php
http://www.cybernet1.com/mcquaid/GenSets.htm