The feud between reigning Supercars champion Scott McLaughlin and Cam Waters proved to be short-lived but their bizarre out lap collision at the Australian Grand Prix remains under investigation.
A fuming McLaughlin demanded an apology from Waters after a warm-up lap incident had sensationally wiped the series leader and pole sitter from the front row for Saturday evening's race at the Albert Park circuit.
McLaughlin retreated to the garage with Waters, who was set to start from second of the grid, after the pair's Ford Mustangs made heavy contact while weaving to warm up their tyres.
Neither was able to make it back to the starting grid for the 25-lap race, robbing McLaughlin of the opportunity to open the series with five wins from five starts.