When the Buick Riviera concept debuted at the Shanghai Motor Show last summer, many didn't give the car a second glance because, while imminently snazzy, no one though it would have much impact on the U.S. market. We all may have been wrong, according to TheCarConnection, which is reporting that the Riviera Concept offers a sneak peek at what the next-gen Buick LaCrosse will look like. We've seen the next LaCrosse in spy shots and can maybe find a few similarities between the two, but otherwise we don't really see the resemblance. Aside from the obvious discrepancy in door count, you can see the grilles are markedly different, with the Riviera's upturned into a smile and the LaCrosse prototype's turned down in a frown. The Riviera also has three air intakes below the front bumper, while the spy shot shows only one on the prototype. Both cars exhibit a certain amount of Buickness in their look, though the Riviera definitely turns it up notch. For that alone we hope the connection between the two is real.