San Francisco, June 30 (IANS) Ride-hailing app Uber announced it has completed over 5 billion trips."On May 20, 156 trips started simultaneously at 7.29.06 a.m., putting us over the 5 billion mark," the company said in statement.The trips took place in 24 countries including Mumbai, Moscow, and Medellin in Colombia.Headquartered in San Francisco, Uber was founded in 2009 as a startup. Estimated to be worth about $680 billion, Uber now operates in six continents, 76 countries and more than 450 cities.