The Dude
Brent's brother Ryan outfitted his vehicle (short school bus) with a Grease Fuel System.
Ryan's pimped out ride allows his diesel motor to run off of used greased (vegetable oil) which he picks up from a local Applebees, for FREE. So not only is he environmentally friendly, but he's saving a few bucks doing it.
Look for him as he makes a trip across the country this summer. I'm sure the ladies will be all over him.
Alternative efforts like this show that it is very viable for the private sector to come up with new energy means - no need to complain to your local gov't anymore.