I remember my Titan also did this on outgoing calls. I don't remember what exactly it was (I think a specific dialer). I also showed it to my iPhone friend (you know, as a "look what else my phone can do that yours can't), and he showed me the same thing - except it also shows the area in the state (I don't remember if it was a city, county, etc...). But he 1up'ed me on that one.
