> Almost no rust

They're basically a cult that worships vehicles and being "shiny", I think they'd have rather well-maintained vehicles.

The cars in the first movie were all in pretty good condition, from memory.

In the first movie civilisation hadn't completely collapsed yet so the cars and bikes look in pretty good nick - which is how they should have looked. It's only in the second film that things get really post apocalyptic & rusty since at that point civilisation was all but gone. (I watched both films back to back last night)