THE S60 embraces the qualities with which Volvo has earned its reputation - safety, comfort, safety, practicality, safety, eco and family friendliness. And safety. But at long last, the Swedish marque has delivered a reason for the driving enthusiast and younger buyer to sit up and take notice. Not only is the sports sedan stunning to behold, it promises to perform like no other car in the Volvo stable - and be as involving to drive as its German rivals. Sadly, the promise is a false one.