The low-budget film came out in '79, went on to become a cult classic and spawned two follow-ups, Mad Max 2: The Road Warrior in '81 and Mad Max Beyond Thunderdome in '85. But whatever happened to the bikes? "Byron Kennedy offered us the surviving motorbikes for five grand for the lot; all seven of them," recalls Cardart. "He said, 'One day they will be collectors' items,' and we said, 'Yes, Byron, sure.' So the bikes were taken to a wrecker; some of them got wrecked and some got put back to bog-stock and sold. Not a single one survived in its Mad Max incarnation."