If it were me I'd cancel the order and submit a new one, the MyGIG should be in the system any day now (unless that is you like the idea of a portable nav). The MyGIG is so much more advanced, plus of course it is "built-in" and much less subject to theft like the Navus will be.

Also, something is not right about the vehicle arriving mid month. If it is being ordered from the factory no way will it show up within a couple of weeks of ordering. Are you sure the dealer did not rush you and is simply going to get one from another dealer that has one in stock?