Traffic taillights pass the Audi AG automobile museum in Ingolstadt, Germany, on Monday, March 11, 2013. Audi AG, the world's second-biggest luxury carmaker, is aiming for a "slight" increase in revenue this year and reaching an operating margin at the upper end of its long-term target corridor, helped by sales of compact SUVs and the new A3 sedan. Photographer: Guenter Schiffmann/Bloomberg via Getty Images
