Yesterday, my car was encased in ice. I was scraping it off the windows and digging out the windscreen wipers. Odd thing to do in October, but there you go.

It was only later when the spoiler went up on the motorway did I wonder if there are any special things you need to do to defrost this part of the car. By that time it had thawed out, but in a cold day, moisture in the joints will have frozen and locked the moving parts together.