Exclusive: Didi Chuxing, Ola working on making ETA more accurate, gain wider edge over Uber

There are several tech giants that can claim to be outdone by restrictive Chinese regulations and hence become irrelevant on the mainland — like Google, Twitter and Facebook — despite having the potential to beat competitors. But Uber, the San Francisco-based cab-hailing app, and the world’s most valuable startup, has run into a different problem: a world-class competitor called Didi Chuxing, formerly known as Didi Kuaidi.