Clif-actually, a model of this thing could be built without a bunch of hassle. The control mechanism could be for a r/c tank model-left & right "screws". The big deal would be (1) which scale? (2)probable scratchbuilding the Fordson tractor (3) making the "screws". It could be done but would be just a static model for those of us who rarely (except for last winter) get much snow. Maybe that mud thing would work...but imagine cleaning a model that had been run in the mud. Yikes!
____________________ It doesn't matter if you win or lose, its' how you rig the game.