I've known lots of bike commuters everywhere I've lived in Canada (Vancouver, Ottawa, Edmonton and now Victoria) Edmonton had the least and Victoria has the most. I didn't know any real bike commuters when I lived in East Lansing, MI except students riding around campus which I guess is technically commuting but not really. It definitely seems more prevalent in Canada, even in winter, than in many places in the United States. In Edmonton, no one really was that impressed with me riding year round because they were just as cold sitting in their frigid vehicles that don't even warm up by the time they get to work and I was certainly not the only one doing it, but when I put the trailer on to carry my hockey gear to a game they became very impressed for some reason.