Buick relying less on Opel, more on China

Buick's sales success and product expansion in recent years have been driven by General Motors' decision to incorporate platforms and vehicles from GM's Adam Opel subsidiary into the brand's lineup.

Low-end Chinese cars? Think bigger

Past assumptions that China's automakers would make a run at the economy end of the U.S. market are proving to be wrong. They're aiming up-market.

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