A 25-year-old man is fighting for his life in Dunedin Hospital after suffering a serious head injury in a car-surfing incident in Mosgiel last night.
Emergency services were called to the corner of King and Mure Sts following reports a man had been injured in a car accident just before 7pm.
A St John spokesman said the man suffered serious head injuries.He is now in a critical condition in hospital.
Acting Senior Sergeant Ben Butterfield said only one vehicle was involved, and "it appears one of the occupants was riding on the roof".
"He has fallen off the roof at some point and suffered some pretty serious injuries."
Police were interviewing the occupants of the vehicle, which remained at the scene.
It was too early to say whether alcohol was a factor.
The Serious Crash Unit would investigate the scene this morning.