While most of us carry cell phones that have GPS and other location services, they require a significant amount of infrastructure to be useful. Drive from Washington to Alaska like [Lonney] did a while back, where that infrastructure is essentially nonexistent, and you’ll need to come up with some other solutions to let friends and family know where you are.
This is a companion discussion topic for the original entry at https://hackaday.com/2024/03/27/automatic-position-reporting-over-hf-radio/