Step 1: park your 1993 BMW in a snow bank.
Step 2: allow snowfall to accumulate for approx. 1.5 weeks.
Step 3: when ambient temperature is 15°F, brush snow off car. Observe the quarter-inch coating of ice under the snow.
Step 4: observe how the quarter-inch coating of ice laughs at your ice scraper.
Step 5a: the best way to increase visibility when the windshield is obstructed is to roll down your window.
Step 5b: attempt to roll down your window for increased visibility. Remember the car has the coveted “express-down” feature.
Step 6: observe loud scraping, popping, and crunching noises emanating from door. Observe smoke emanating from door.
Step 7: observe that window has not moved.
Step 8 (optional): drive car south until ambient temperature rises to 45°F. Observe how window falls into door.
Step 9 (optional): part with $329.
Update: By “park in a snow bank”, I really mean “leave in snow bank once car becomes stuck”.
Ouch!