Poised to lead its market segment once again, the 2009 BMW Z4 Roadster made its world debut at the North American International Auto Show. The world's most successful purveyor of premium automobiles exhibits the new Z4 alongside an array of models that are beginning to arrive at BMW Centers, from the refreshed 3 Series to Advanced Diesels to the new fifth-generation 7 Series. Watch the BMW Concept X6 ActiveHybrid and the BMW Concept 7 Series ActiveHybrid, which preview the potential of hybrid technology in luxury performance vehicles.