In message .com,
Boltar writes

Is all this reliance on GPS a good idea? If at some point the US
military decides to scramble or kill the signal (and don't say it won't
ever happen, you just don't know) then it seems half our infrastructure
will now stop working.

I think that's why Europe is currently investing so much in Galileo.

I can't help but think this is incredibly shortsighted.

Well, I don't think the buses will actually stop working - its just that
we might not know when they are coming any more.

--
Paul Terry