Because DVNP is one of the few places where I couldn't reach any amateur radio repeaters or cell service, I acquired an InReach Explorer after the trip. Now pushing SOS is available if needed as long as enough sky is visible.craig333 said:I'm also betting very very few of these people in cars have any comms other than a cell phone. Embarrassing as it might be I can always push the "rescue me" button if it comes to it.