I have worked, as a Manager, for various plants, food, motor oil, many manufacturing industries, other than cars, and know how their system works. It is so that, just in case a consumer has a complaint, and it ends up as a lawsuit, that the manufacturer knows where the product came from, such as its' production vat, the machine operator who filled the bottle, or whatever, and what plant produced it for the market, the date, and the time it was bottled.
That is how I know, of course companies can change their system at anytime, but usually management stays with the same old same old.
Most management lack leadership, creativity, ability to change with the market easily, and get stuck in a rut. That is why I left the "rut."