This is my entry for the Canadian Lego Builders group's red & white vehicle contest. I figured something snow-based would fit the bill perfectly, though here in Vancouver we're lucky to get so much as a chilly breeze in the winter.
Anyway, the seat was taken with some modifications from my car model Puma V8. I'm real proud of how I fit the engine behind it. Also, notice how the front runners have little creases. This makes them usable as footrests. The vehicle is operated by twisting the two handlebars to make the individual wheels go, which makes both turning and, more importantly, slush-spraying burnout spins possible.