The crash was reported on southbound Highway 101 near the Willow
Road off-ramp at 1:52 a.m., the CHP said.
The female driver was speeding there and lost control of the car. It struck a tree, which launched it into the air and into another tree, the CHP said.
The driver and her male passenger were both pronounced dead at the scene. They have not been identified.
The Willow Road off-ramp was closed until about 3:30 a.m. while the CHP investigated the crash.
The results of a preliminary investigation into the crash indicate that alcohol appears to have been factors in the crash in addition to speed, according to the CHP.
Investigators continue to probe the circumstances surrounding the deadly crash.