Android Wear, Google’s operating system that works on wearables like smartwatches, has a few nifty features — it can take voice dictations, do navigation for walkers and bicyclists, and send up location-sensitive notifications. The standard options are what’s expected — weather, time, maps, reminders — but a select few companies were invited to develop some of the first third-party Android Wear apps consumers can try once they get their hands on the watches. In the keynote address Wednesday morning, Google executives alluded to a few pie-in-the-sky visions: ordering a pizza to you in 20 seconds, picking up a Lyft with just a few taps of the watch face.