Someday, when we start buying AR glasses, persistent AR directions might make a lot of sense. And directions aren't the sole point either. AR maps could help you learn more about everything you pass. Tory Smith, product strategy lead for autonomous vehicles at Mapbox, a navigation startup, envisions a possible future in which your windshield could display the nearest parking garage, then tell you how many spots are open, how much it costs and whether there's a good coffee shop nearby. You might someday navigate indoors--where GPS doesn't work--using AR maps, with Google Translate instantly turning every sign you pass into your own language.