https://www.recode.net/2017/8/22/16182120/uber-drivers-tips-180-days-of-change-flexibility-destinations-arrival-times-long-trips

Uber is rolling out its third group of driver-friendly improvements, this time focused on flexibility. The company started introducing these new features in June with the addition of the long-sought-after tipping feature.

Since then, drivers have earned a total of $50 million in tips, according to Regional General Manager of U.S. & Canada Rachel Holt.