Onlookers were helpless to stop a raging ball of fire that started in a car in the Springvale Stadium carpark on Saturday during the A&P Show.
Stall holder Christopher Cape first noticed a wisp of smoke behind a car just before 12.30pm, when he spotted two men trying to see in the windows.
The men, unable to see if there was anybody inside the smoke-logged car, got a hammer to smash some windows, Mr Cape said.
Within minutes, the car was fully ablaze and the car beside it was catching fire too.
"It all happened within two minutes ... everybody was standing around sort of stunned, watching," he said. "The thing became a raging ball of fire."