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The North American International Auto Show at Detroit's Cobo Center winds down Jan. 23. More than 30 new vehicles were premiered, as protesters weighed in on jobs, wages and the environment.
In this photo released by Ford Motor Co., more than 1,000 people watched Ford technicians tear down an F-150 EcoBoost engine at the North American International Auto Show in Detroit. The engine underwent 10 years of use and more than 165,000 miles of tough testing. Sam Varnhagen/AP