I just drove to work in -13 degrees...holy crap that was bad. Although it is super cool looking down at all of Minneapolis (can see most of the metro area from my office) and see all the buildings and their exhaust in the sky.
Saw a few bikers out this morning redefining HTFU. Gotta have no other option if you are biking in this weather (feels like -25 with the wind) and/or just be a monster.