Per other reporting, the driver was a 39 year old male.
California Highway Patrol is investigating the accident. So far, no word on the cause.
I think this might be the guy....
https://m.facebook.com/AllAccessCoach/photos/this-weeks-featured-driver-is-brad-dratnol-also-known-as-fingers-or-drat-brad-ha/1102219156502770/