Finally saw Mad Max IV. If you don't want spoilers, turn back now, but I have a theory I want to put out there.
I don't think the Max in this movie is the same one as in the previous movies. I think it's a different Max a generation, or more likely two generations, later on. How is that possible? Not sure, but if it doesn't happen like 60 years after the pocky pockalypse, then it has to happen between MM and TRW, which is obviously what we're supposed to think, but which doesn't make sense.