I’m just making things up so please read the answer and tell me if it makes sense. I hope this helps
There are many ways the article of clothing on a car can be considered art, the way the article is put and what it symbolises for example a clean shirt that came loose from the hanging line on your neighbours yard could end up on the windshield of the car after a storm or a windy day. You could tell a story similar to the example I gave you and the also depending on the article of clothes itself could have its own backstory
Answer: He cuts the grass everyday to keep the grass low to create the illusion of the yard appearing larger. By the end of the week he starts the cycle again to make sure the grass doesn't start overgrowing.