But, as another said: "I deal with sheikhs, hedge fund managers, people like that. To make an impact with a watch, you're going to need something worth a quarter of a million. Now that I would notice."

So that would appear to be our conclusion: these days, to make a real impression on a supercar dealer through the medium of horology, you need a watch worth more than the supercar itself. Oh, and staff in supercar dealerships are the nicest people in the world. Sorry, guys.