I had to take my car in for service today, because the "check engine" light came on. My first plan was to walk home, but the repair shop offered to drive me, so that's what I decided to do. My chariot was a big F-150; I got to watch it's dashboard GPS navigation system on the way home.
I've seen and heard ads for these systems, but I've never seen one in action; it was pretty weird to see roads pop up on the map as we passed them, and see the map turn slightly each time the road veered one way or another. My driver had the sound turned off, so I didn't get to hear the spoken directions to my house, but he assured me they were very accurate.