Still, per this thread
http://forum.ppcgeeks.com/archive/index.php/t-51.html
(could only find it with Google search, not with ppcgeeks own internal search - odd....),
the A-GPS data are accessible (works on my XV6900/Touch also
.
It would seem some kind of programming could correlate the numbers with maps as Delorme Street Atlas and Google Maps do with "real" GPS data, even if not as precise as satellites.
FWIW