I've just cancelled my Apple Online Store order for a new WiFi iPad after remembering that only the 4G version has an aGPS functionality. Now I need reasons to justify that slightly-more-expensive purchase to my wife...I mentioned, of course, the possibility to use navigation apps with pre-loaded maps when we go places. However, I already have GPS in my car and she said that we could do the same with her iPhone 4...so my simple question is: What other possible uses are there for GPS-enabled iPads besides pure turn-by-turn navigation? Geotagging of photos? What else? Your prompt replies are greatly appreciated!