No Art, if you try to add another vehicle, it will reset the first one according to the email I got, and it does remove it from the first vehicle.

You can only have ONE sync tied to ONE mobile no. ONE mobile no. to TWO Sync accounts is a no go.

Apparently each vehicle is require to have its own registered sync account.

It would be better to have the sync account tied to the OWNER who should then be able to have multiple vehicles under ONE sync account. Now I have 3, 1 for wife which is active, 1 for 2013 F150 which is active, and no active moble for the 2010 Expedition which the 2013 F150 replaced in Fords eyes.