The more cars drive over the snow the better it breaks up although last year it turned icy overnight.
Far from my experience. The number of times I have seen the mentally impaired driving two wheel drive Euroboxes gunning the engine, spinning the wheels and polishing the road surface to a lovely shiny surface is almsot innumerable.
Give me a nice foot of powdery snow, no problem. Nice compacted ice covered with urban idiots who don't know how to drive......gridlock!