"She was shaken. She didn't even realise the car was on fire. She just heard something go 'bang' and the car stopped.
"But it actually blew a hole in the bottom of the motor and all the oil was running out and was on fire.''
Mr Quartermaine put the woman in his truck and then directed traffic around the burning vehicle until firefighters arrived.
The driver, who declined to be named, said she was driving her mother's car and had no idea it was on fire until Mr Quartermaine arrived.
The fire disrupted the flow of traffic leaving the city after Saturday night's big Eagles concert, as the motorway was closed for a short time while firefighters extinguished the blaze, police said.
A line of vehicles was waiting to exit the city, but the fire was out and the motorway reopened by 11am, when a tow truck removed the charred remains of the vehicle.