Travis Kalanick forced out as Uber chief executive

Travis Kalanick stepped down Tuesday as chief executive of Uber, the ride-hailing service that he helped found in 2009 and that he built into a transportation colossus, after a shareholder revolt made it untenable for him to stay on at the company.

Kalanick's exit came under pressure after hours of drama involving Uber's investors, according to two people with knowledge of the situation, who asked to remain anonymous because the details were confidential.