Ah indeed that M70+4, lovely. And the only way to own a Z3- by adding 6 or 8 more bangers!
Nothing like the sound of the best road engine on earth (up unto a few years ago, lol), that S38 howling behind you must be the best way to end an epic, epic tour of the only garage on earth worth working at all your life. Those guys are having too much fun... lol.
Interestingly it looks like they maintain most of those cars so each one must go through regular maintenance.
Note to self: Learn German- and find a way to visit that garage!