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Before we can get to the car we're actually talking about, we need to first discuss the world-beating racecar the 300 SL was based on. And that car is... the 300 SL. There is a difference; the racer was known internally as W194, while the production car's designation was W198. Prior to the war after the war that ended all wars, Mercedes-Benz was an established motorsports marquee. In fact, its track prowess extended back to the 1900s when MB's ultra-low (comparatively) Simplex purpose built-racer dominated the competition for almost a decade, up to triple-batshit Silver Arrow racers of the 30s pumping out nearly 650 supercharged horses, hitting top speeds of 270 mph and battling neck and neck with Auto Unions of the day (including the midengined, 500 horsepower, 6.0-liter V16 monsters). But then Hitler had to go all crazy and the German car industry... well, you know the rest.