While planning our mountain ski village the question of transport arose, permanent snow means no wheeled vehicles or paved roadsr. A web search located no sellers of Snowcats or Ski-doo's i did find some pic's so scratch/bashed this for starters. The van was an e-bay purchase the rest is balsa, cotton thread & printer paper. The cat tracks were cut to shape & cotton thread was glued on for the tread, a rather fiddly job but it looks well worn on the finished vehicle. Cheers, Damien.