I'm building a pig tractor, my wife thinks its more for a joke than necessity, but heck...jokes are a necessity. I built it out of an old cotton trailer, just discarded the frame and welded a new one to slide it on. I added some old golf cart wheels to the rear and a chain to the front where when you tow it , it lifts the front off the ground an inch or two. I'm painting it like apatrol unit, and I scored me some blue lights off a police cruiser Friday that ill mount on top....i told her I'm making labels for it that say...chefs department and down the side...To Perfect and Serve. ...heh its fun and cheaper than fencing