Employees of German car manufacturer Mercedes Benz work on Mercedes B-class cars at the Mercedes plant in Rastatt July 16, 2012. Daimler will invest another 600 million euros ($734.6 million) by the end of 2013 in its Rastatt plant in Germany, where it will add a third shift starting in October to meet demand for its line of compact Mercedes-Benz premium cars. REUTERS/Alex Domanski (GERMANY - Tags: TRANSPORT BUSINESS)
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