https://www.theguardian.com/technology/2017/aug/27/former-general-electric-boss-jeffrey-immelt-rules-himself-out-of-uber-role >Troubled cab-hailing app company will continue its search for new chief executive to succeed co-founder Travis Kalanick >Uber’s quest for a new chief executive to succeed Travis Kalanick has taken another twist after one of America’s most senior corporate figures ruled himself out.