The man underwent surgery after he was stabbed several times in a fight between two groups in southwestern Sydney.
The flash at the Edmondson Park parade began at 3 am on Sunday. More people came to the car and joined him, he told the police.
Three men were taken to Liverpool's hospital with injuries, including one man who suffered a pierced lung after multiple stabbing. The police have set up a scene and are investigating.
© AAP 2018