Got caught out in the snow on the eastside going from Kirkland to Sammamish. Have some big hills but fairly long so grade is not too steep and well traveled... Didn't need to stop. Car did well. Felt the rear end slip with a rhythmic pattern a few times. Feel and sound like in accordance to the traction control. Every time we saw a car stuck in the side of the road.. it was a BMW. While the Model S did well, really no competition compared to most FWD cars.