The new Buick Riviera concept vehicle made its global debut this evening in Shanghai. The coupe combines avant-garde aesthetics and advanced technology, including plug-in hybrid electric vehicle propulsion, in a single package. It is the fourth global concept vehicle jointly developed by GM's Shanghai GM and Pan Asia Technical Automotive Center (PATAC) joint ventures in Shanghai. "The new Riviera offers a preview of Buick's future design language," said Shanghai GM President Ye Yongming. "By seamlessly integrating...Read.