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Though asked by Max, but never elaborated on as to its meaning, the Toecutter gang has a small tattoo on the majority of each member located near or around their face ("Nightrider" right cheek. "Toecutter" right temple. "Bubba Zanetti" left cheek and so on) in the shape of the Greek symbol/letter "F", which is represented by a small circle with a vertical line running through its middle. This symbol, however, is not present on Johnny the Boy in the film, who is seen as the novice member of the gang, who is still being "taught" as it were. It is not until after he is responsible, and partakes in the death of MFP officer Jim Goose, is Johnny the Boy seen brandishing the gang tattoo on the left side of his neck at the end of the film, when Max handcuffs him to the back of the crashed vehicle he was looting. This would be a strong indication that the tattoo the Toecutter's gang wear is a symbol of their commitment by participating in the murder of a "Bronze" officer, as it is mentioned that Nightrider, who bears this mark as well, is a referred to as a "Cop Killer" at the films beginning, indicating that the Toecutter gang have been involved in the deaths of members of the Main Force Patrol. Given George Miller's Greek heritage, that is hinted at throughout the film and its sequels, and that Johnny the Boy is seen to be marked with the tattoo after he has committed murder, the symbol is more than likely to represent the first letter of the Greek word (foniás) which means "Killer".
Most of the extras used in the film were paid in beer.
The "get-out-of-jail-free card" that Goose gives the triker was an on-set joke. Because of the limited budget, the biker gang was an actual biker gang (the Vigilantes), and they had to ride to the set each day in-costume; often with their prop weapons displayed. Since the production company expected them to be pulled over by the local police, each was given a letter explaining the film's peculiar requirements, and asking for law-enforcement's understanding and cooperation.
Tim Burns (Johnny the Boy) was so into character that he annoyed everyone on-set, and was abandoned one day during lunch while handcuffed to the wreck.
Some of the things Nightrider yells over the radio are lyrics from the AC/DC songs "Rocker" and "Live Wire."
James McCausland: The bearded man wearing an apron in front of the roadside diner watching the police cyclists and tow trucks drive away is the film's co-writer.