Germany's car industry is in crisis. What will it take to fix it?

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For decades, car-making has been the jewel in Germany's industrial crown, a powerful symbol of the country's famous post-war economic miracle. Its "Big Three" brands, Volkswagen, Mercedes-Benz, and BMW, have long been praised for their performance, innovation and precision engineering. But today, the German motor industry is struggling. With the faltering economy a key factor in federal elections this month, how can it get back on the road to recovery? Written and read by our international business correspondent, Theo Leggett.