What would the force be? 2-3 Newtons? it can't break the shade... actually we can try it, let's put it in vent position, block the opening of the shade, and go 80mph for example...
Nice info tip about the catches, i did not know that. those are a must, cause you might stop on a light under the rain, and the water might start dripping inside...
sometimes BMW engineering is not that straight forward
another riddle for example, and maybe many don't know of, is why wouldn't the window open/close automatically if the door is open? I want to open my door and close the window as i get out of the car, who said i can't??? when it's hot and the window is opened, I either have to close the window while inside and suffocate for few seconds, or open the door and keep my finger on the switch for few seconds... not logical!