Subtly refreshed for 2009, the CLS Class still features it's trademark coupe silhouette incorporating four doors. The CLS550 comes with a 382-hp 5.5-liter V8 engine teamed with a seven-speed automatic transmission. The more aggressive CLS63 AMG has a 507-hp V8. Both models come with Mercedes-Benz's Pre-Safe system, which will automatically close the sunroof and move the front seats to the safest position if an impending collision is detected. More traditional safety features such as side-curtain airbags and anti-lock brakes also come standard. As you might expect from Mercedes, luxury appointments abound. With features like power front seats, four-zone automatic climate control, six-disc satellite surround sound audio, and doors that shut themselves if you forget to, comfort and convenience are everywhere.