IMO, That's overkill, i've seen great video shot with lower end 3CCD HDV cameras. Take a look at the Sony HDR-FX1000 for example.
I'm not saying that's what you should buy, I haven't paid much attention over the last few years because everything is so good already, but I don't think you need to spend 9K for a camera to make a snowmobile video, maybe more like 3K.
But hey, whatever you spend make make sure the video ends up on youtube.
Mark