Mercedes-Benz S-Class

The year's technology show-off has the world's first camera system that sees the road to adjust the suspension, massaging "hot stone" seats, active cabin perfuming, and night vision that identifies pedestrians. Its 4.7-liter V-8 makes 449 horsepower; two V-12 models may be added later. [S-Class $93,825 (S550)/$96,825 (S550 4Matic); mbusa.com]