Bought my first second-hand Volkswagen when I was 18 years old directly after my second approach for driving licence.
Some month' later I invited my parents for a trip to the Luneburger Heide near Hamburg. When we left the car my father went around my blue Volkswagen researching for this and that.
Suddenly he came to me and said:" Hey, have a look at this tyre, son".
And indeed, one of my tyres was worn out to the canvas!
Thanks dad, you made a good live-saving job.