Loss of comms doesn't cause a passenger liner to land 100' left of center on an autopilot landing using GPS signals or cause "uncle Bob" to turn left into someones living room because the GPS navigator in his car said to ?

Actually I think the focus is on GPS because so many people are now dependent on it and a lot of the rest of the impacted technologies are less visible to the general public (or they have some land based mitigations that should be less impacted).

- Eric