Buick Riviera Concept
When General Motors unveiled the Buick Riviera Concept at the Shanghai Auto Show in 2007, GM was saying two things. First, it was saying that it sells a LOT of Buicks in China, and intends to solidify its commitment to the country with this China-designed coupe. Second, it was telling the world that Buick is back, baby, and it's going to be the source of some beautiful cars. Nobody knows what powers the Riviera Concept. However, if a production version ever appears, we hope it sports the powertrain from the Cadillac CTS.