Cars and watches are functional. Take a look at the all black Roger Dubuis Excalibur Huracan, which is inspired by the Lamborghini, and Hublot's Big Bang Ferrari 1000 GP in white gold, a tribute to Scuderia Ferrari's 1000th Grand Prix. These two Italian automakers have a whole lot of history between them. For collectors only.
Useful link: https://robbreport.com/style/jewelry/roger-dubuis-excalibur-huracan-hublots-big-bang-ferrari-1000-gp-1234576249