A 32-year-old man's fighting for life, after a crash on the M1 at Burleigh Heads.
The motorcyclist suffered life-threatening injuries collided with the back of another car around 5:20 on Wednesday evening.
He was taken to the Gold Coast University Hospital in a serious but stable condition.
The Forensic Crash Unit is investigating further, but it is believed the rider lost control of his bike in the southbound lanes, near the Bermuda St exit.
He reportedly wasn't wearing a helmet.