1980-ish John Deere Trailfire 440 snowmobile, much like this one: It was not a toy, but the main family vehicle, when we lived here for a couple of years. The first thing we did there was to mod the skis by welding on a two inch wide steel strap and some rebar after that. We drove them about 8 months out of 12. The most fun was removing the hood in the Spring, and hearing the roar of the engine. No, I changed my mind. The best was at night in early Winter on the sea ice, before it got rough. Turn off the headlight, slide forward and lay back on the seat, then go full throttle and admire the stars and Aurora Borealis overhead.