Uber has noticed that passengers are looking for alternate transportation when there aren't any cars nearby or the surge goes above a certain number. To try and keep the passenger from going to Lyft or finding a cab the app will now show them an ETA and price for Uber select in an attempt to keep them from walking away from Uber when the X product isn't available. It happened to a friend of mine Saturday night and she was able to get an Uber select in a quarter of the time and at the same price as an UberX (the surge on UberX was 2.5 at the time).