I managed to commute to my local train station for the entire winter! That makes a full year of car free living to work and back (plus grocery trips & stuff).
The winter riding was really only bad during the wet damp days. When it was -10C it actually wasn't bad and the ice along my path really didn't affect the mountain bike I used, snow was only bad right after a storm and the roads were cleared pretty quickly (to get the cars moving..hee..hee).
Now it's +10C and i've got the whole spring/summer/fall to look forward to and winter again. Car sits around mostly looking lonely.