The Mercedes-Benz S-Class has been on the road going on two years now, but the technology found in the these sedans remains the benchmark for the class. Under that understated skin lurks the heart of a robot. Microprocessors and onboard sensors instantaneously determine many of the forces acting upon the car, filter the data, and adjust the car's handling for you. Starting with the S500, the S-Class was redesigned in the spring of 1999 for model year 2000. The car came out lower, sleeker (most aerodynamic efficiency in a passenger car), smaller, and roomier.