I wimped out and drove this morning. I've ridden in this temperature before (4 F this morning here, with wind chill), but I'm catching a cold, and I didn't think riding would be good for it. (Or maybe it would be -- that sounds like another thread.) Anyway, the thought of my nose filling up and oozing into my face mask half-way into the ride was extremely unappealing!
I'd take my hat off to you, except it's too damn cold! Be careful out there, guys!