I thought maybe the guy was diabetic and not doing treatment well.
Years ago when I was renting, I came home to find a Troy police car in my driveway. Officer wanted to know if I knew anything about the car in the other side of the garage. Yep, downstairs neighbors. I didn't notice that the front end of their car was caved in and the airbag deployed. Apparently she drove it home like that. Another car shows up, cops visit the downstairs neighbor. As I'm walking away I heard her say "Oh, I didn't realize I hit anything". They couldn't charge her with DUI of course, because they had no proof she was drunk.
Not to start a whole thing, but I've always thought people should get a drinking license as well as a driver's license at 18. Drunk driving conviction? You can keep the driver's license, you lose the drinking license. Give someone a drink without the license? You're criminally liable for anything they do drunk, same as if you handed a known felon a rifle.