A 17 year old male is fighting for life in Sydney's Royal North Shore Hospital after crashing his car at Woy Woy early last night.
It took Police and NSW Fire and Rescue 30 minutes to free the teen from the wreckage after the vehicle hit a tree.
The Careflight Chopper landed at nearby Brisbane Water Secondary College oval.
He's believed to have suspected head and spinal injuries.
UPDATE 11AM THURS:
The teen's condition has been upgraded to serious.