The fear of the Audi driver

Yesterday after basketball, I went to my car, stored 2 basketball balls in the back of the footroom and then drove off. Then, during the ride, I noticed every little doggy squeaking from the back. I immediately thought, Sch***e, what that again for garbage. I had no longer thought about the balls, which have sanded on the leather from the front seat. Had huge fear that what is broken on the rear axle… Today I drive then nothing guessing through a 30 zone. I immediately drove to the edge and looked at everything, if what is in the eimer. found nothing, motor ran perfectly. Until another older gentleman came to me, who had probably watched me for the 25 minutes. he then told me, I drove over a flattened Coke-Dose. first I fell a stone from my heart. Either I am totally crazy, or I am just afraid for my Audi. Do you know that at the smallest sound you immediately at Thinking the worst?