I was talking about this technique with the LBS guy down the street just after the big snow - the one problem is that you need disk brakes or a fixie....

If we actually got more of that lovely weather we had Thanksgiving week, I'd invest in a snow bike - I get a Kona "bike" -it's cheap, it's got a 3 speed internal coaster brake hub on the back and a v-brake on the front and big wide tires - I'd put real studs on it though rather than do the zip tie thing. Seriously - when it snows here bike is the best way to go.... cars don't get you much of anywhere and public transit pretty much comes to a halt