Inertia can be your enemy. An object in motion tends to stay in motion, especially on ice. The owner of this bike had disabled the kill switch, but it is equipped with snow tires to use on frozen Lake Minnetonka. When he failed to mount the moving bike, it took off on its own for a little solo adventure!
See the Benny Hill version if you prefer. Giant Asparagus filmed this, on a stabilized camera while on foot. He's in really good shape to keep up with the bikes! Anyway, the NorthernWheelies video they were trying to get that day is here. (via reddit)