When the Winter War broke out between the Soviet Union and Finland in 1939, the intense cold and rough conditions favored the Soviet Army and their fast aerosleds, which were used as ambulances and as patrol vehicles in isolated areas.
Huh? What sort of history rewriting is this?
The war just happened to break out between Soviet Union and Finland? Just like that? It really was a surprise attack initiated by Soviet Union - unlike the Continuation War where some blame can be put on Finland too. Also it turned out that the winter certainly didn't favor Soviet Army, and the theater of operations doesn't permit any sort of large scale usage of the aerosleds.
I never heard of them having been employed. As a patrol vehicle or an ambulance perhaps, but definately not near the front lines. And it would make a rather inefficient reconnaissance platform since I think it would make a lot of noise. Also useless on more hilly regions. In flat regions it could work, but it sounds rather fuel inefficient too. How come this is the first time I hear about these machines when I'm living next to Russia? Nor do I recall having ever read that such machines would have been captured, despite a number of other cannons, tanks and ammunition.
However, I do know that they employ the large tracked vehicle as a troop transport that is shown at the end.
