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.
To be fair, most speed limits aren’t very accurate to the design of the street. If you wanted, you could speed up for straightaways and slow down for turns. Obviously though, they aren’t going to put a speed limit sign every 5 feet, so it won’t match the street design everywhere.