One of the things I find most amazing about our cars is the hand-built nature. Every car has its own personality. I've done some looking around the internet and have only found a few isolated owners who have posted anything about their cave paintings. I think it would be really neat to get a bunch of them in one place to compare and discuss.
I'll go first, but mine are sadly not that interesting and even difficult to read. A few numbers (38, 025061/20L) and what look like a few signatures but I can't make them out. Also the now-incorrect lock code, not pictured (was on the underside of one of the lips)
Eventually I hope to look under some of the other panels, but not until they have to come off for something repair related
Post your pics!