Respecfully, anytime I see something like this or people claim meshtastic/core is the "way of the future" I just cringe.
Yes, mesh has it's uses, but for the cost you can pick up decent GMRS or MURS gear that will give you 10x the range (yes, I understand GMRS can only have up to 1 second dara burst every 30 seconds, manually operated).
I personally don't see the hype over mesh that other systems can't do other than form factor.