Buick Riviera: plug-in concept previews future design language

The Buick Riviera concept has debuted at the Shanghai auto show, previewing the 110-year-old automaker�??s future design direction. Developed jointly by General Motors�?? China-based Pan Asia Technical Automotive Centre (PATAC) and Shanghai GM joint ventures, Buick says the sleek, gullwinged Riviera concept combines �??avant-garde aesthetics [with] advanced technology�?�. Without