The Sonoma County Sheriff's Office released video of rescuers from multiple agencies rappelling down a ravine to get to the driver.
The accident happened on Ridgecrest Boulevard near the Cataract Trail access point.
The car fell more than 500 feet before crashing into a tree.
"The vehicle was wedged against the broken tree, which was holding the vehicle up from falling further down the hillside," the sheriff's office said in a statement.
The driver had to be airlifted to a local trauma center.