Automatic snow tires throw chains at your wheels [video]
Granted a passenger car is not a heavy truck or bus, but living in the upper Midwest, I've learned that snow tires make a huge difference for winter driving. I'd heard the folklore that snow tires are more important than all wheel drive for handling on both snow and ice, and having used them for a few years now, I'm a believer. So called "all season" tires are not snow tires.You can get a complete set of snow tires, mounted and balanced on rims, delivered to your door by Tire Rack (no relationship, just a happy customer). If you don't want to change the tires yourself, there are shops that will change them out and store them for you.