ZF CEO's 'reckless' buying spree led to his departure

FRANKFURT -- The departure of ZF Friedrichshafen CEO Stefan Sommer shows that politics and entrepreneurism rarely are a good match. Sommer turned ZF into the world's second-largest supplier with the $12.4 billion acquisition of TRW Automotive, but his global expansion ambitions clashed with the parochial outlook of the trust that runs the company.