If it helps, there's still a functioning oil refinery run in the Mad Max universe. It's basically declared by fiat that exactly those parts of civilization rema

If it helps, there's still a functioning oil refinery run in the Mad Max universe. It's basically declared by fiat that exactly those parts of civilization remain that are necessary to run war vechicles and make bullets. I think it was about answering the question, "what would happen if we only had the parts of modernity we didn't like."