Film from 1930s(+/-) with flying cars all over New York

This is probably Just Imagine (1930). The description on the "Flying Cars" page of TVTropes says:

In the 1930's sci-fi musical Just Imagine everyone has their own propeller-driven personal airplane with horizontal props inset in each wing so they can hover in midair, allowing their occupants to chat or burst into song. In a Take That! against the anti-semitic Henry Ford, all the car manufacturers have Jewish names.

The synopsis from Wikipedia mentions:

Just Imagine is a 1930 American pre-Code science fiction musical-comedy film, directed by David Butler. The film is known for its art direction and special effects in its portrayal of New York City in an imagined 1980. Just Imagine stars El Brendel, Maureen O'Sullivan, John Garrick and Marjorie White. The "man from 1930" was played by El Brendel, an ethnic vaudeville comedian of a forgotten type: the Swedish immigrant.

The film starts with a preamble showing life in 1880, where the people believed themselves the "last word in speed". It switches to 1930, with the streets crowded with automobiles and lined with electric lights and telephone wires. It then switches to 1980, where the tenement houses have morphed into 250-story buildings, connected by suspension bridges and multi-lane elevated roads.

So it's set in New York, has multi-level "roads" and flying "cars", but only TVTropes specifically mentions the Jewish names.