As I said just checking the service records on their computer does not mean they have to drop everything, it would take minutes, by reception staff, just enter the reg. number. But you find that funny
No, I found your comment funny. Is that how BMW dealers operate, then, with no ID documents relating to the car they just drop everything and hand over the details of someone else's car to a complete stranger walking in off the street? Are you aware of any tents in the area of the one in the OP allowing a clocked car to be driven off for the time a dealer check takes?