Snow Bike

A company called North Legion is making this thing called and SMX, which is basically a bike with skis instead of wheels. It's really not much more complicated than that, and as you can see it's possible to throw some serious tricks down on these.

A bunch of riders have already signed on to ride these things in the winter. So far the rider list is: Matt Hunter, Eric Porter, Darren Berrecloth, Cameron Zink, Trond Hansen, Niels Windfeldt, Lance McDermott, Gaspi, NPJ and more have already signed up with North LegioVia Pinkbike