My kid’s just finished the classroom part of driver education and it prompted a discussion of crazy things we’ve seen other drivers do.
The craziest thing I saw, many years ago now, was I came up behind a guy driving a Ford Ranger pickup and could see through his rear window that he was doing tricep extensions with a dumbbell in his right hand. I was more surprised as I passed to see he was shaving with an electric razor in his left hand. I don’t really know how he was steering.
Kiddo said they were told personal grooming was the fourth leading cause of accidents.
I was on the beltway one night in a construction zone. They had jersey walls (concrete barriers) instead of cones and barrels to shift traffic. The SUV in front of me had not been weaving or worrying me at all when it drifted into the jersey wall in the left and just ground along it doing about 70. I expected them to jerk the wheel the other way, but they didn’t. After a few seconds, they drifted back to the center of the lane. Just as I was thinking good on them for not panicking, they slammed back into the jersey wall and rode it until it ended. Their car was scraped all to hell. They had to have fallen asleep (passed out drunk). The grinding noise of car on concrete and flying sparks were too obvious to not be noticed by a conscious driver. I backed way off and fortunately was nearing my exit.