content: I have wondered about this practice with automated vehicles and ice. I have always left extra room infront of me at intersections that are known to be icy so that if the person behind me can't stop I have some room to move before anyone gets hit, often 5 feet can mean a world of difference in these situations. Living in the norther US I want to see how one of these vehicle deal with being coated in snow from wind blowing around while they are driving and the rear being covered in it from their own tail of snow that gets kicked up. Basically your car gets coated even if you were to brush it clean off at the start of your drive, even if few bother to take this step to completion now.