Found a great solution to icy snow covered windshields in the morning. I put a sheet of those non-slip rug sheets on the windshield and held it in place by sliding the bottom edge under the wipers. This morning after 8 inches of crusted snow, I found the edge and pulled it off - along with it came all the snow and ice. It worked great.
http://tinyurl.com/8qyvge
I got mine at a local discount store.