"Uber is now tracking your location even after you leave the car. A location-tracking feature that the ride-sharing company proposed last year has gone live, despite fierce opposition from privacy advocates."
Uber, realizing it had hundreds of millions of people in its back seats as a captive audience, just announced it will allow third-party apps the ability to serve up notifications, content, or ads to its users during their trips. The notifications would be customized to the length and locations of each person's ride, but only with permission from the user.