My first job back in 1977 was working on a small 10 acre farm. The boss had A Gravely tractor with the mower (with a sit-down sulky), a rototiller, and snowthrower. He chopped 3 of his fingers off with the snowthrower one winter. I loved mowing with it, it was badass. The mower/sulky combo would wheelie if I tried to speed up too fast, driving the handlebars down into my knees. You could stack extra wheels onto the drive wheels to increase traction.
In the '60s I lived in a huge apartment complex, and the maintenance guys had a bunch of them for mowing and snow removal. They were everywhere.