Watchers of vintage races and rallies know this week starts one of the majors on the docket: the Mille Miglia, an annual run across Italy by various enthusiasts, viscounts and gearheads in every manner of racer. This year, BMW's honoring one of the cars it ran successfully in 1940 — the 328 Mille Miglia Touring Coupe, which set a speed record that still stands — by creating a retro-themed concept car on the bones of the new Z4 M Coupe. The streamlined Mille Miglia Concept Coupe recalls the original, though as a Chris Bangle interpretation. That means the concept, which rides on a lengthened version of BMW's current M Coupe — and is powered by the same 3.2-liter six — is adorned with a clash of surfaces and fins in place of the flowing lines of the 1940 car. Expect a public showing when the race starts later this week.