Mr. Colliver moved to Moscow, Idaho when he accepted a teaching job at the University of Idaho in the late 1950’s. He lived there until 1962 or 63. He traveled often between his home base in or around Oakland, California and Moscow, Idaho for many years.
After searching for more information about this particular case, I also found a few others with somewhat similar details in those cases as well.
Mr. Colliver didn’t lose his privilege to drive until 1986. Food for thought!