THE daughter of a man seriously injured in a car crash last Thursday wants to thank the good Samaritan who rushed to her father's side and administered first aid before the ambulance arrived.
The only trouble is she doesn't know who the mystery man was.
Deanna Long was at work when she received a call that her 75-year-old father, Mick, had been in a car crash near CQUniversity.
"We knew nothing except dad had run off the highway and into a tree," she said.
"Apparently Dad appeared to slump at the wheel and crossed the outgoing traffic, remarkably not killing anyone."
Mr Long was knocked unconscious after taking the full impact on the driver's side of the car.
Seconds later a bystander came to his aid and pulled the injured man away from the steering wheel and supporting his head so his airways remained clear.
"That's why Dad is still alive," she said.
"I don't know who the person is and that's the person I would like to thank."
By a stroke of extremely good luck, a Gin Gin ambulance crew happened to drive past the scene not long after it happened.
Paramedics Jason Thompson and Mel Bayntun were heading back to Gin Gin when they spotted the car crashed into the tree.
"We were randomly there - we happened to be at the right intersection at the right time," Mr Thompson said.
Mr Thompson said the man suffered life-threatening head injuries.
"The bystander did excellent first aid - it was superb," he said.