If this is it, I also don't see the scandal. But now consider the app behavior over many rides instead of a single ride. If the driver and passenger app are "honest" and there aren't bugs in calculating the route then they should converge in their estimates so that the average (distance, price, whatever) metric displayed is the same in both apps. If the driver estimate is systematically smaller than the passenger estimate, IANAL but that seems like a big problem for Uber.