When it comes to AR, I am not interested in those "look at the pokemon on the street" kind of AR. I'd like projection on the street from the device. I want the Apple Watch to show me a hologram like in Star War. That's the kind of real AR I want to see. I will enjoy driving if map can be projected like hologram on the car windshield so I don't have to check the app on the side.
I think the next breakthrough is just happening now: all cashless transactions. This is already happening in China, India, and some country in Europe (I forgot which one, but over there even newspaper street vendors accept credit cards). US is way behind. Also, chip in human will eventually take off. So just wait for more human-wearable integrations (and this is depressing and dangerous, see my comment below). I bet in no more than 10 years.