well all the roads I could see with my eyes ;-) lol
the funny thing was that it would snow hard for like 20 minutes then cars would come through and you could see tracks, and then another snow squall would come through and bury the tracks again, this happened several times between 4 PM and 11 PM, the last one started around 10, snowed hard to about 10:30 and lower rates of intensity after that until it petered out by 11.
The first one that everyone was talking about wasn't the one that laid the snow cover on the roads though, it was the ones that came after that. I guess it was still too warm when the first one came through?