I think the brine that is on the local roads has all frozen. Although the roads were mainly dry looking this morning I cold spin the (snow) tires on my GTI in 1st, 2nd, 3rd and 4th even at 1,500 to 2,000 rpm. A car in front of me almost spun out
I think what's happened was the little bit of dusty snow we got the last few days very mobile, so when the winds came up yesterday a lot of it blew onto the roads, melted, and then refroze with the rapid temp drop last night.