Mercedes-Benz SL 55 AMG Sings Like A Muscle Car On The Autobahn

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Once upon a time, the Mercedes-Benz SL 55 AMG was the fastest car in the world with an automatic transmission. That was back in the early 2000s, and the title was short-lived once the Mercedes SLR McLaren hit the street. But this video featuring the old R230 SL-Class devouring the Autobahn reminds us just how much of a monster it was.