Call us crazy, but Brabus’s latest creation, the 850 6.0 Biturbo Coupe—essentially a modified Mercedes-Benz S63 AMG coupe—seems almost . . . boring. Make no mistake, 850 horsepower and a possible 1069 lb-ft of torque (limited to just 848 lb-ft to spare the driveline) from a twin-turbocharged 6.0-liter V-8 is spicy, and Brabus even managed […]