Mercedes-Benz has a long and storied history as an armored vehicle manufacturer. Be it Adolf Hitler’s bulletproof 770K limousine or the early, army-spec G-Class SUVs, the Germans have provided the world with some of the best ironclad rigs. More recently, Stuttgart has been developing and selling armor-plated automobiles through its Guard program, which already includes a generous range of sedans and SUVs, such as the E-Class and the M-Class. Going into the 2015 model year, the Stuttgart crew expanded its flagship S-Class lineup by adding the S600 model to the Guard program. The result is astonishing, as the segments most luxurious and comfortable limousine has also become the safest vehicle in the world.