The World Snowmobile Championship is held in Munich and 28 international racers compete in speed and cross-country events. Over all winner: Steve Ave of Hurley, Wisconsin. Two woman jump on the back of a snow mobile driven by some cool cat in dark shades. Off they go. A father zips by trailering his kid a caboose cart. A few dozen snowmobiles take off from a start line. They maneuver through turns and snow banks. Close-ups show they go through various turns. A man waves the checkered flag. Crowd shots. Another race begins. A distant track is seen from a hill. Snowmobiles zig-zag through tree lines. Stunt devils go over jumps. Three jumps are shown.