True ... if you decide to head out on a busy roadway or highway ... when I had the problem with my windshield, I was just moving over block to block to get to where I had to be in my neighbourhood. I do remember one friend who was coming up from Toronto in February who lost his heating midway through on his way to Timmins and he said it was absolutely scary to decide to drive on a northern highway with a windshield like that.

You're right, it is an absolutely dangerous thing to do in the wintertime and I'd never attempt it on a major roadway if I had the choice.