A friend of mine recently fitted his boat with an autopilot and GPS. He marveled at how it guided the boat to his house, hands off, right up the correct canals.
When I was launching the first GPS satellites from Vandenberg AFB in the 1980's we had no idea it would go as far as it has. There was an idiot congressman who kept trying to cancel the program.
On the other hand, because of GPS I have had to spend thousands of dollars to equip my personal airplane with new equipment because the Federal Govt did not care about how its plans affected individuals.