'Virtual' off-roading in the Grand Cherokee

Slight glitch with the Jeep Grand Cherokee Overland's satnav … well, more than a glitch, it went mad. The arrowhead is supposed to be on the 4wdNewz driveway but it's showing it as being somewhere out in the Manukau Harbour! It's been telling me I'm up on hills where there are no roads, in rivers when all I see is a suburban street. Maybe this is Jeep's way of giving Grand Cherokee drivers the feeling that they're hard off-roading without actually doing it. A day later, as if by magic, the system found the road it was supposed to be on and fixed itself.