That looks like a fun handyman garage project but I don’t think I’ll be saving up to buy one. The youtube comments say they sell for $3,000. For that money I’d stick to a good used snowmobile or ATV. That thing doesn’t have any suspension. They were on pretty smooth stuff but rutted up rough ice could be uncomfortable.
Looks like kind of a hassle to have the motor/track, sled to sit on, and finally pull a shack behind all of it. I’d also guess top speed wouldn’t compare to a sled or ATV either.
Still, it’s probably lightweight and I could see a decent option for some people.