2024 A.D.?

First they promised flying cars, here "underground cities" are promised, w/ a firm date. This yr.! Yet not seeing either.

Another Edgar G. Ulmer classic.However, this might be closer to the truth:

In 1960, a military test pilot (Robert Clarke) is caught in a time warp that propels him to the year 2024, where he finds a plague has sterilized most of the world's population.

We can only hope.