1908 Mercedes Brookland-Semmering Rennwagen | Purpose-built for the 1908 Semmering Hill Climb, this car has higher specs than a Grand Prix car of its time. With a 150HP 17.4-liter engine, it not only won but set a course record. This car drove to the 1909 race under its own power and won again, setting a record that stood for 15 years. (Provided Photo/Indianapolis Motor Speedway Museum)