I am still wondering where are the flying cars and teleporters we were promised.
Did car manufacturers actually promise to make flying cars? I imagine it would be legally impossible as the FAA would have make new lanes of traffic in the sky, so that they would crash into planes and buildings.
Personally, I'm not disappointed as there have been so many shows, films, and books that try to depict the future and they are never fully accurate. Many predictions are just pulled out of imagination, instead of being based on reality.
Plus, history has shown that society slowly adapts to new technology, and it takes time for tech to be cheap enough to be available to a wide audience.
It is why cell phones took years (introduced in the early 80s) to become ubiquitous in society in the late 2000s.