It seems that hardly a week goes by without a new Chevy-branded vehicle being launched somewhere in the world. From the Cavalier-replacing Cobalt in North America, to the rebadging of Daewoos earlier this year in Turkey and across Western Europe in a few months' time, to the 'Chevrolet' Forester in India, the Niva and Viva in Russia and the Spark in China, GM seems determined to make Chevy the world's biggest brand. Glenn Brooks reports.