I've put about 30,000 miles on my 2002 Prius, and just recently got caught in a snow storm while on a trip. The now was not real bad, but we were watching the altimiter closely to see if we were headed down (out of the snow) or up (where it might get heavier). We did not put the chains on the tires, as the snow accumulation was never more than an inch.
The CVT of the Prius performed perfectly and, in retrospect, made the car feel extremely stable. There was no shifting or jerkyness of any kind. The power (when applied to climb hills) was applied smoothly and without any sign of losing traction.
All this was at speeds as low as 25 and as high as 45.
Anyone have a similar experience with a CVT?