There are. Millions of them. Most any diesel can run just fine on veg oils, even used cooking oil. (Some very modern cars might need the electronic control s

There are. Millions of them. Most any diesel can run just fine on veg oils, even used cooking oil. (Some very modern cars might need the electronic control systems tweaked.) There have been times/places where grocery stores put limits on oil once it became cheaper than diesel. Mythbusters: https://youtu.be/QEX1YFXYTdI https://youtu.be/QEX1YFXYTdI TopGear: https://youtu.be/GOFbsaNeZps https://youtu.be/GOFbsaNeZps