We had to write a letter to the DMV about my Grandfather-In-Law, years ago. He was witnessed by another relative going up the exit ramp to get on Interstate 79 on the East Coast. Tragedy was avoided, but he never told anyone about the incident afterward. After receipt of our letter, the DMV asked him to come in for a test, rather quickly, and he failed it BIG time, for lots of reasons, one was the medication he was taking. He never drove again, but ended up enjoying another reason to spend time with other people, while they took him where he needed to go. It was a lousy feeling to have to write that letter, but it actually should have been written months before it was. Thank God we don't have to see him in the situation of this man in CA, or the families he hurt so much.