The Mercedes-Benz 540K Cabriolet C was a technical marvel, powered by a 5.4-liter inline-eight engine. On its own, the engine delivered 115 horsepower, but when the Roots-type supercharger engaged it surged up to 180 hp at 3400 rpm. Technical Details: The Mercedes-Benz 540K Cabriolet C was a technical marvel, powered by a 5.4-liter inline-eight engine. […]