I agree that GPS and maps/directions are a magnificent improvement.

I remember what it was like to get lost, and be lost for hours, late at night nothing open, no one but unsavory characters out.

I remember how hard long trips could be even with maps or trip-tiks from AAA (which were awesome)

GPS enables all sort logistics, it allows transport companies to ensure trucks are driven safely, to know when and where goods in transit are there is an entire world of productivity improvement right there.