The crash occurred at 2:30 a.m. Sunday on westbound state Route 54 near Woodman drive, according to the California Highway Patrol.
For reasons under investigation, the driver of a black Nissan 370z veered out of a lane on the freeway, and struck a guardrail at a reported high- rate speed which caused the vehicle to overturn.
Both the driver and a man in a passenger seat sustained fatal injuries and both were pronounced dead at the scene.
It was not immediately known whether alcohol or drugs factored into
the crash.
The victims’ names are being withheld pending family notification.
Authorities urged anyone with information related to the crash to call the CHP at 858-293-6000.