A man is fighting for life and another has been left injured after a motorcyclist and a car collided in Sydney's north.
The crash occurred at the intersection of Epping and Herring roads, in Macquarie Park, just before 12pm.
The motorcyclist, a man in his 40s, has been taken to the Royal North Shore Hospital in a critical condition.
It's understood he has suffered head and chest injuries and multiple limb fractures.
The driver of the car, a 20-year-old man, has been taken to hospital with minor injuries.