505
When your vehicle outlives its cloud: What happens next?
(arstechnica.com)
This is a most excellent place for technology news and articles.
You have my attention... but with Meshcore and a repeater magnet mounted to the roof.
What's a repeater magnet?
Meshcore uses a Repeater & Companion Node setup where as Meshtastic is more peer to peer.
Here's a quick video showing the concept I had in my head.
https://youtube.com/shorts/VqjJ67SuRUw?is=070uPwoYDEbeM6fG
The magnet is the antenna mount type, but I personally would use one of the roof rack screw points, to act as structure and a ground plane connection.