Liam Fountain was cast as Mad Max, after he tried to audition for Mad Max: Fury Road and had made a trailer for YouTube. Which led the actor to meeting die hard Mad Max fans and one of them, Paul Miller, owned a replica of the V8 Interceptor and had the script for Mad Max: Renegade and decided to make for fun.
At the end of Mad Max (1979), which happens shortly before the short film. Max was shot in the leg by Bubba Zanetti and his leg is bandaged. In the short film, Max's leg is not bandage and appears to be walking fine and normally. Usually a bullet wound in leg takes 3-6 months to heal and Max would require the use of a walking stick to help him walk.