The City of the Future in 1925

This is the cover of a Popular Science magazine for 1925.  Apparently, the vision of the city of 1950 was much different than what was to be realized 25 years later.

Since the underlying text is difficult to read, I have included it here:

"Future city streets, says Mr. Corbett, will be in four levels: The top level for pedestrians; the next lower level for slow motor traffic; the next for fast motor traffic, and the lowest for electric trains. Great blocks of terraced skyscrapers half a mile high will house offices, schools, homes, and playgrounds in successive levels, while the roofs will be airplane landing fields, according to the architect's plan."