When petroleum isn’t available, what do you use to fuel your engine? Why vegetable oil, of course. In the post cataclysmic world of Star Touched, there are no oil refineries and gasoline is hard to come by. That’s why Marty the Merchant has a custom bus that runs on a combination of old vegetable oil, rendered fat, and alcohol. The old fast food places may not be serving up food any longer, but they’re a great source of fuel for Marty. So, next time you smell French fries, take a look around for an old bus. It just might be Marty.
If you don’t think it’s possible, check out these links.
https://www.youtube.com/watch?v=QEX1YFXYTdI
http://journeytoforever.org/biodiesel_svo.html
https://www.popularmechanics.com/cars/a20651/grease-car-vegetable-oil/
https://www.caranddriver.com/features/how-to-convert-your-diesel-to-run-on-vegetable-oil