The 2006 BMW M5 and Mercedes-Benz CLS55 AMG are powerful sedans. The M5 offers a more engaging driving experience with 279 ...

I finally settled on a 300-mile combination of roads that would give us the best possi­ble approximation of all the kinds of driv­ing anyone buying a new Jaguar XJ-S, Mercedes 450SLC, or BMW 630CSi ...