@wildweasel
(To be clear, it's a great concept - but the map data is, mmm, "differently fragile" than the satellites themselves. I still have a copy of USGS tiff files for the US that are from before OSM, which clearly label a schoolhouse that is no longer across the street from me... even without anything collapsing.)
@foone
@wildweasel
The satellites only help you calculate coordinates, mapping is local or cloud (so, how many survivalists have offline copies of OSM afterwards :)
@foone