Rescuers were sent out to Sunset Cliffs Sunday afternoon after a car toppled over a cliff onto the beach below.
San Diego lifeguards said the car went over the end of Orchard Ave. at 3:30 p.m.
Crews had to use the jaws of life to cut the roof off the car and peel back the dashboard to reach the driver.
Heavy traffic and spectators forced rescuers to call in a helicopter to help get the person out.
The 28-year-old victim was airlifted to the UCSD Medical Center.
Witnesses told police the car came barreling down Cable Street at around 80 miles per hour, wiping out barricades and stop signs.
Police say the wreck may not have been an accident, but a possible suicide attempt.