Burrrrrrrrrrer, Some people for any number of reasons do use a bike, a scooter or motorcycle for transportation up here even when the temperature is at -8 degrees. Not counting in wind chill.
I simply do not know how they do this, they are out in ice storms, freezing rain but still need to go somewhere. I had an old Jeep that the heater went out on, I like to froze to death going and coming from work. Horrid, but I passed others on bikes, scooters and motorcycles who rode year round. I passed them every day and recognised them.
Early Am I would stop at the local hospital to buy the newspaper from the machines, often I would see a few riders inside warming up, the Hospital became so use to, in the cold times having these people come in to thaw out, they put a table of free coffee out for them.