Featured interview: ZF Group CEO Holger Klein You may not have heard of ZF Group but you certainly have heard of its clients, which include Mercedes and BMW in Europe, GM and Ford in North America, and Bird and Lotus in China. ZF calls itself the world's largest provider of mobility technology and says there are virtually no cars now that don't contain at least some of its parts. Joining Julia to discuss is the company's chairman and CEO Holger Klein. To learn more about how CNN protects listener privacy, visit cnn.com/privacy