The watch: The Richard Mille RM 40-01 The single best thing about this watch: The ultra-luxe, ultra-tech-y wizards at Richard Mille are up to more of their usual tricks. The backstory: In 1917, when Louis Cartier was searching for an object to inspire the next timepiece for his jewelry house, he looked to the battlefield. Seen from above, the tanks of WWI had a rectangular shape that would form the basis of one of the most iconic timepieces in history. Watchmaker Richard Mille does things just a tad differently. For the brand’s latest collaborative watch with automaker McLaren, it also took inspiration from an overhead view of a vehicle—this time, McLaren’s rubber-burning Speedtail. Why the teardrop? Well, because it’s “the most aerodynamically efficient shape found in nature,” according to Richard Mille.