RE: nitro snowmobiles??
I had an attack when they first came out, thing was garbage, granted I did have a .21 motor and it was the short low pro track, I did see at one point in time there was what looked like a long track big paddle option somewhere, but stock it was useless in the snow. I had sold mine that same winter I got it, but I have heard they work good on grass. In 3"+ powder it wasn't going anywhere, icy hard pack roads it did better but any type of hard to moderate throttle acceleration and it would just spin out and not go anywhere.