HARDtalk is in Stuttgart, Germany - a city with a long history of engineering and manufacturing. The auto industry is a major player here, which is good news for Stuttgart as long as the German car industry continues to thrive. Stephen Sackur speaks to Dieter Zetsche, the boss of Daimler, a company with a global reputation and the makers of Mercedes Benz cars. However, over the past decade they have made some costly mistakes and they still face major challenges, not least the push for greener more efficient vehicles. Daimler has a proud reputation, but does it have a bright future?