China's best-selling carmaker can now claim China's largest proving ground. General Motors, Shanghai GM, China JV partner SAIC and the Pan Asia Technical Automotive Center (PATAC) opened the $253 million facility in China that has more than 37 miles of roads, simulating 67 different driving conditions and nearly 250,000 square feet of engineering and repair space. It occupies a little more than two square miles in Guangde County, Anhui, about 130 miles from Shanghai.
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