I hate the cold and I hate scraping windshields. My solution was to buy from Harbor Freight a 5’ x 7’ blue tarp, and cut it in half to 2.5’ x 7 ‘. I place one piece over the windshield so that the wipers blades are covered and then slam the front doors on it. If there is any sort of breeze, then it is best to start up wind. In the mornings, I removed the tarp, shake it to remove any snow or ice, fold it three times and store it in the car. Depending upon the weather report, I’ll again cover the windshield when I get to work. It works great—except when the weather report predicts warm weather but it snows.