BusinessGreen Speed – Racing for Tomorrow 2To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoBusiness10/08/2015October 8, 2015Racing driver Marc Lieb is preparing for the World Endurance Championship. He’s driving a Porsche 919 Hybrid. In a few weeks, it'll have to be ready for a 6-hour race at the Nürburgring.https://p.dw.com/p/1GkEeAdvertisement