I recently purchased a set, Technic 42000 Grand Prix Racer, that I am very happy with. However, I am perplexed by the fact that the set came with 6 extra transparent 1x1 round plates (studs).
As you can see, this was clearly not a mistake, as they are shown in the instruction manual. So my question is, does anyone know what these are for? My guess was that perhaps the Designer is signing his/her name to the set in a quirky way. Can anyone explain?

