General Motors is considering adding a coupe to Buick's lineup

Now that General Motors has almost completed shedding its non-core brands, the company is refocusing attention to its main brands. The company is in research and development of a new sport coupe that could be sold as a Buick."Buick definitely needs more product in the pipeline," John Cafaro, director of design for Buick and Chevrolet, said in an interview last week at the Chicago Auto Show. "My