I was driving through Vernon, TX on Monday when I saw a fellow using a farm tractor (regular John Deere-ish tractor) to move covered hoppers around a grain silo. He had a cable running to a tie-down point on the hopper and was pulling it down the tracks towards some other hoppers in the distance. The tractor was riding alongside the tracks, so the cable was at an angle, but it seemed to be working. I've never seen anything like this before and I was wondering if anyone else has. The guy driving the tractor didn't have on anything that showed he worked for the railroad (BNSF owns those tracks) so I think he worked for the silo. I guess you can use whatever works.