The Mercedes-Benz SLR McLaren pairs a 617-horsepower supercharged V8 with a braking system rated to handle 2,200-degree temperatures and a rear wing that adjusts itself the instant the driver hits the brakes. From the limited-run 722S roadster to the tuner-built 722 GT pushing past 670 horsepower, this is a car built entirely around extremes. Read on for the full breakdown of what makes it one of the most technically ambitious road cars Mercedes has ever built.