Looking more like a sleek they'll never build it like that concept than an actual production car, the 2007 Mercedes-Benz CLS-Class is what the company calls a four-door coupe. This contradiction of terms is convincingly brought together via the CLS' crouching body, curving side windows and swept back roof line. In a sea of handsome, midsize luxury sedans, the CLS has the increasingly rare ability to stand apart thanks to its head-turning style. And in this segment, that counts for a lot.Under the overtly athletic skin is a chassis to match. This year sees the infusion of more power under the hood as a pair of new V8s debut. The standard CLS, called the CLS550, now sports a 5.5-liter V8 wielding 382 hp, a full 80 horses more than the V8 in last year's CLS500. The mighty AMG version is now called the CLS63 AMG and has a 6.2-liter V8 that makes a monstrous 507 hp, an increase of 38 hp compared to last year. Both engines send their power through a seven-speed automatic with manual-shift capability. Performance is exhilarating in the CLS550, stupendous in the CLS63. @@@ COME OWN DOWN AND VISIT US FOR A TEST DRIVE@@@