But it's easier to change to winter tires, and you never have to scrape the windows. There's pros and cons to both. I've done many cold winters with a bicycle

But it's easier to change to winter tires, and you never have to scrape the windows. There's pros and cons to both. I've done many cold winters with a bicycle, and with a car, and there's no clear winner. For me it comes down to how far I'm going, what I need to carry with me, the quality of the roads and drivers, whether there's a bus route, and availability of bicycle storage versus car parking. I've never found traction to be a serious issue. If it's bad enough to avoid the bike, it's bad enough to avoid the car, too, and I'll walk or take the (chained) bus.