My adult daughter loves to spend time in her little cabin in the mountains. Big Bear, for those local. She stayed the weekend, and it snowed 5 inches. Monday morning she scraped the snow off the windshield and proceeded down the mountain.
She also likes to run the heater in the car, and open the sunroof for the nice view.
Yup. 5" of snow dropped all over her as she forgot, and opened it.