https://thenextweb.com/tech/2019/11/21/uber-will-start-audio-recording-trips-to-protect-its-passengers/

Uber has plans to ensure its passengers feel safe when using the service by introducing an audio-recording safety feature to all rides. This feature, which will be tested in Mexico and Brazil next month, is being introduced amidst increasing user safety concerns, as first reported by The Washington Post. 

Once it’s been tested in various Latin American cities, Uber has plans to roll out the feature in the US, which will eventually allow drivers to automatically record all rides, while passengers can opt in to activate the feature through the app’s Safety Toolkit prior to their ride. Neither driver or passenger will be notified when the feature has been activated, although passengers will be warned before their ride that it may be recorded for safety reasons.