It’s no secret that Buick is one of the major car manufacturers in China, but the vehicle that is leading the charge of the People’s Republic may come as a surprise. The best-selling car in the biggest market in the world of cars last year was the Buick Excelle, a C-segment sedan, which also happens to be a version of the 2012 Buick Verano, which is now for sale here in the States U.S..