I think sometimes we tend to forget that farm equipment and construction equipment are just that, and that they were never meant to be driven like a Cadillac. I recall driving one of the little Ford tractors something like 10 miles; it didn't go fast enough, so I attached a wire and opened up the governor. Being young and ignorant, I didn't think about what might happen if I hit a hole or some such at a speed it wasn't designed to go.
I also recall a young fellow roading a combine; wide open, of course. He crossed a bridge, hit a section of washboard at the end of the bridge; the small rear guide wheels jumped up and down, he lost control, and it ended up in the middle of the field upside down. Washboards are scary; I know from experience it's hard to steer when your wheels are off the ground, even in a car. Maybe I'm a pessimist, but every time I got on a tractor, I expected it to try to bite me sooner or later. I'm just glad the old U M&M had a had clutch; it saved me from getting bucked off a time or two.