sometimes things like that are just dressing. I'm not sure it'd actually improve the movie in any way. the movie literally opens up with max eating a two headed lizard and then going on a badass car chase, right from the beginning. The movie is even called Fury Road. It's a literal and figurative road, from beginning to end. Extra stuff like what you're asking for doesn't add to the plot, characters, or anything. It's just window dressing, and Mad Max Fury Road's minimalism is a part of the appeal and mystique. It gives the setting and timeline an air of mystery, just like the titular character in Mad Max.