I've read several threads here on the Subaru navi feature but am still not sure I fully understand it, so I could use some help with that. All my questions revolve around how the car's navi links with the outside world, either for geolocation or for stuff like map updates and the Starlink services. I plan to use this car in areas with zero or very limited cellular service, like most trailheads on the eastern Sierra and many of the more remote areas in CA national and state parks, so it is important to me to understand the capabilities and limitations of this feature before I venture into those areas. Based on what I have read so far, I am pretty sure the latter is cellular based, but I am not sure about the other two, so if anyone here can enlighten me, I would be much obliged.