IPOD Touch Bluetooth capabilities with OS 3.0

Probably to the first. No to the second.

Here are the Bluetooth Profiles supported by the 2nd gen iPod touch with OS 3.0

http://support.apple.com/kb/HT3647

If your Bluetooth enabled car stereo supports *Advanced Audio Distribution Profile (A2DP)* and *Audio/Video Remote Control Profile (AVRCP)* then it should work. No guarantees until you try it.

There is no support for any other types of Bluetooth devices, including GPS attachments.

There is no reason that bluetooth GPS should be unavailable on the ipod touch. The sad truth is that Apple has always been way behind the curve in thinking about GPS. This has been intensely frustrating for large numbers of people. 3.0 "unlocks" bluetooth for the touch, but the touch cannot yet speak through bluetooth to GPS devices. Given Apple's past and what appears to be its marketing plan, I wouldn't wait--unless there's some cooperation with Tom-Tom about this. But I don't think Apple's mind is focused on the ipod touch.

I agree that there is no good reason that bluetooth GPS should be unavailable on the iPod touch. What is Apple waiting / saving this for? I've used a bluetooth GPS puck for years with my antique Palm. Navionics is producing fine charting apps and they would be very useful on the iPod with GPS.
Sure, I might use an iPhone for this app, if Verizon didn't have my geographic area locked up.

There are no devices such as this that can be used with a BT puck as the SDK does not give access to the dock. You can use a GPS as a handsfree device if it supports it, but that is all.

Since TomTom is coming out with an app I doubt they are interested in this methodology anyway nor the Touch. Unless the 3rd Generation Touch also has a GPS chip.