So I've been contemplating buying a Bluetooth GPS receiver for some time now, but was waiting for a decent smartphone to pair it with first, so I could use it for turn by turn navigation. Now that I have my iPad I'm just curious how long you think it will be before an app is available that will allow me to do this? I mean it would only make sense that if you have a Bluetooth GPS receiver paired to the iPad that you should be able to get turn by turn directions. Is this something that might be worked into the native maps app, or perhaps a third party app like Garmin or Tom Tom? Or am I just missing something and is there already an app like this available? What's everyone's opinion on this?