This just happened a minute before I got to the scene.
A large pine fell and struck the front of a car travelling East on El Toro Road at Canyon Wren. There was minor damage to the front of the car, and the driver was not injured, albeit shook up by the incident.
Authorities have been notified and are on their way.
Update: I just drove by an hour later, and the lanes have been cleared and the crew was just finishing cutting up the fallen tree. It looks as if the tree rotted/ gave way at the rootball (See second photo below) and the weight of the tree toppled it.