I definitely think that domain and task specific AR has a strong future. I would love it if Uber took to using AR instead of relying on dash-mounted iPhones. It could give them visual indicators of a destination (things like which side of the street, potential drop off zones, etc). It could help pinpoint the location of the app-user at the origin. It could augment their GPS so they don't have to type in directions or look at a tiny screen while driving.