I think that the fact that we have goofballs controlling state oil companies in Venezuela, Russia, and Iran adds real urgency to the drive for alternatives, and I have noticed that several local gas stations are digging up their tanks and rennovating in preparation for ????
Have you looked into WVO? I just bought an old diesel VW Pickup. Diesels will run on almost any type of oil (peanut, soy, kerosene, waste vegetable oil, etc.). Stop by your local Chinese food restaurant and fill up for free. Some filtering required to get the fortune cookie crumbs out first, of course.
Digging up tanks in response to very expensive EPA mandates.
Probably installing double walled tanks with leak detection.
Expensive for the station owners (and passed on to consumers) but I don't miss that rainbow sheen on my drinking water.