Ever since I heard that Google Maps would provide navigation for the XC40 P8, I have been wondering what happens when we drive in places with no cellular coverage. I assume Google would pre-download the maps when we navigate to the destination, which is in an area with no cellular coverage. What happens if you try to navigate to a new destination when you are in an area with no coverage? Would the navigation be able to function without cellular coverage? Also, does anyone know which US cellular carrier is providing service to the P8 cars?