Well, you know how hard it is to run a tractor on that huge piece of land growing hemp with a rubber fist in your ass...
Wasn't it an episode of South Park a few years back where someone (Mr. Garrison?) invented a bike where the steering or something went up your ass? Maybe they could convert their tractor into something like that. Heck, they could even make them in different sizes, shapes, and colors. It would kill 2 birds with one stone.
Cindie