You’re running late for work, you haven’t even had your cup of coffee yet, and you remember it’s cold outside. Real cold. You’ve got to get out there and de-ice your windshield if you have any chance of getting to work on time. Unfortunately, in icy temperatures and under certain circumstances, auto glass can shatter. But do you know why windshields shatter in cold weather? Matt Kelly, owner of the Glass Doctor of Northeast Ohio franchise, answered the question for Fox 8 Cleveland.