[yawniek]

Then again, we now do have flying cars, floating cities and robot helpers. They just look different and are not (yet?) that common.

[ogogmad]

Floating cities?

[CamperBob2]

I think you could make a case that the largest cruise ships would be recognized as such by people from the Titanic era.

E.g., https://interestingengineering.com/transportation/worlds-lar...

People are starting to live onboard these things full-time, because it's apparently cheaper than a retirement/nursing home.