check this out

Looks as these guys have a lot of fun on the ice of a lake here in Sweden.
Don`t know what this is called in english, but it`s a kind of a kickboard used on ice and snow. Without the bike engine though. Top speed 160 miles/h
Please have patience, the fun begins a minute or so into the video clip.

http://www.youtube.com/watch?v=znq7K3fQLos&feature=related