Saw a minor version of that in Tacoma one day. At the bend going South, by the mall, the freeway was solid ice, up to that point from the North it appeared clear. I was coming from the South and was aware of what the roads were like. In about the 1/4 mile stretch from 56th to 38th Street there probably 10 accidents. As I drove by I watched another car coming around the corner to fast and hit someone. Standing befor the bend was a state trooper, car with flashing lights. waving a flare, but people were still racing by him. One of those times when idiots get instant Karma.