Most tablets and phones support Bluetooth GPS for offline use as my Nokia 5800 and N810. But not the iPad (and other iDevices). There is a special BT GPS which should work with the iPad (Dual) as this app shows it:

http://itunes.apple.com/us/app/bluet...422661436?mt=8

[ame]http://www.amazon.com/Dual-Electronics-XGPS150-Universal-Smartphones/dp/B004M3BICU[/ame]

Is this device really worth the $150 ? Or is there a workaround to use a 'regular' BT GPS for offline navigation (other than jailbreaking) ?