The traffic collision occured on Highway 18 west of Sheep Creek Road in Phelan California.
The link to the San Bernardino Sun is above. This story in the Victorville Daily Press from Saturday has more detail about the collision.
I was lucky to have worked with Jim when he was with Symvionics in the 1990's. At that time the Interactive Analysis and Display System (IADS) was under development to support the F-22 flight test program. Jim was one of the leaders on the original IADS development team.
In more recent times Jim worked for the Government at the NASA Dryden Flight Research Center where he was part of the Western Aeronautical Test Range leadership team.
I am told that a family member was also injured in this collision but do not have any details.