Rained last night and was foggy and just below freezing this morning.
Wasn't until I was almost all the way to work that I realized how slippery it could be.
Fortunately, it was slippery enough that when I was sliding on my side on the road, the asphalt just let me keep sliding and didn't get too bad an abrasion.
Today would have been a good day for me not to ride in. Oh well.