Carmakers race ahead in 2013 The world's biggest car makers have been flexing their muscles - and showing off their muscle cars - in the place they call Motor City - Detroit. The North American International Auto Show kicked off the car industry's annual exhibition schedule. With more than 50 new vehicles unveiled at the event, it is being seen as a sign of the market's rejuvenation. Is that true? In Business Weekly we'll put that question to Jonathan Ferro from Bloomberg. Also in the programme: Facebook's mysterious press event and no surprise in the World Bank's gloomy economic growth outlook. More about: Car industry, Economy, Facebook, USA, World Bank