done some search over google, seems no one has his hands onto this yet.
logically it should be possible i feel,
the idea is, due to the limitation of keyboard/screen size, GPS phone is not perfect GPS device,
however it would be a brilliant idea (at least I think), by connecting a GPS phone with Notebook computers, and using the GPS receiving function plus 3G internet connection, to expend notebook into GPS device.
some thoughts, steps to do this will include:
1. extract GPS single from phone.
2. transfer to computer
3. simulate the signal into google earth compatible format
pros: unlimited flexibility when GPSing over PC, perfect gear for travelers and road trips.
cons: the whole thing, however can be done by simply adding a GPS receiver dongle, without going through the software development trouble.