We should've already had flying cars, remember The Jetsons? During the World's Fair here in NYC in 1964-1967 where they had a pavillion that looks just like the Jetson House which is still standing by the way on the Fair's grounds, weren't we supposed to be living that way since the early 2000's?
Even Saturday Night Live did a skit in it's first year during the mid-70's called Jeopardy 2000 where everything was "Jetsonesque".