I think you'll find that the correct answer is "useless piece of crap". It's only there to satisfy TÜV regulations for rear bumper height and its only function is to send a jet of cold, dirty water at the back of your left leg from ankle to thigh.
I think you'll find that the correct answer is "useless piece of crap". It's only there to satisfy TÜV regulations for rear bumper height and its only function is to send a jet of cold, dirty water at the back of your left leg from ankle to thigh.