Community Tip - You can change your system assigned username to something more personal in your community settings. X
I often see in a bus, tram, metro people with scooters. Here one has a problem - dirty wheels. But you can make sliding wings (fenders) of wheels, which will close at the wheel folding scooter. See. pls the animation.
I created the animation in Mathcad and ask someone to do in Creo!