Early Races were primarily timed by stopwatches mounted to motor vehicle dashboards, but because the complication was shrunk, they have been far more normally found on wrists, especially in the F1 and endurance racing heyday between the ’50s and ’70s. Chopard's Mille Miglia collection celebrates the world's most wonderful race. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/