If it is the Regal, and if it is Insignia-derived, it looks like it's going to get a good amount of differentiation. In any case, signs point to another good-looking Chinese Buick in the works ...

According to General Motors, the Regal GS is officially the fastest Buick ever made. The sedan's lead development engineer, Bill Rietow, and powertrain drive quality engineer, John Townsend ...