Inspired by Tokolosh:

Snow in Mt. Royal
My slick tires have no traction
Cars and bikes both slide

I noticed something was amiss on the way home yesterday when my skinny bike started drifting toward the curb despite my best intentions. I managed to avoid falling, but I couldn't climb the hills to my house through 2-3" of wet snow that was beginning to ice up.

This morning we switched to our studded mtn bikes, although I managed to get out of the house before noticing that I forgot to switch the pedals as well. The ride in was fine, despite the fact that the roads were completely iced over. 3" of snow + freezing rain + -5C = skating rink. My wife bailed trying to stop for a pedestrian. I have the advantage of being 60 lbs heavier then her, so I had more traction. She left a 15' long skid mark from her spikes on the ice - note to self: locking up rear wheel on ice is bad.