Ain't that the truth. There was a recent post about EMP-proofing a TJ, but the ChiComms knocking out the GPS constellation seems much more likely (they've been pretty busy doing things in space lately). It is, after all, a military system first-and-foremost. Think how much chaos we'd see if an entire generation of drivers who have literally never even seen a map can no longer rely on GPS to simply get to a new place in the city where they reside!
I know, personally, I'd be f---ed. Being a mountain kid I've got no problem up here. When I'm in the city though it's a whole different story. Definitely need to get more practice with maps. It's just not something most schools teach anymore and I've just never been in a situation I absolutely had to use them. I've always had OnX or Garmin at my disposal.