It's not nice, but it looks like a parking pillow.
Unfortunately, minor and major damage to parallel parking - and caused by others - is a common occurrence in urban life.
We either let go of this thing and don't worry about it constantly or find some method to defend. This American owner in New York chose the latter, and if it is not the most beautiful such a protector, but it only means protection, and the price of a repair polish is actually astronomical.
There is also a company that offers such a parking protection tool, which is a completely forgiving thing for a BMW M4, even if the car looks very unfortunate.
(Source: hvg.hu / photo: pixabay.com)