It has to do with collusion between driver and passenger. It protects everyone involved. It prevents a passenger from getting in the vehicle and saying, "I told the app I was going to the bijou duplex but I really need a driver 3 hours to run a bunch of errands. I think we can work out a deal thats beneficial to us both..." that's just one of millions of possible scenarios. Uber can now tell if driver and passenger just drove by the bijou duplex never ending the fare. All of this other squabbling about privacy blah blah blah is senseless. Just ask yourself one question, whom is it that is actually tracking me? For what reason? OK that's two questions. I think once you answer those questions you'll come to the same conclusion time after time, "I'm just not important." On that note one can also conclude, "There's nothing about me, nothing I do, say nor anyplace I go is needed by Zuckerberg. He's doing just fine without my info. The worst thing that's gonna happen is I'll mysteriously get toothpaste coupons or rental car discounts."