What's the most insane "highway of tomorrow"?S

How often have you been looking at old futurists' drawings of what the "highway of the future" might look like and pondered the fantastic mind-altering drugs they must have had back then? What's the most insane "highway of tomorrow"?

The craziest vision must belong to Dr. John A. Harriss, former NYC health commissioner. Back in 1930, about the time when Robert Moses was thinking big thoughts about how to turn New York into Car York, Harriss came up with this insane, six-story Manhattan highway for Modern Mechanix magazine. Why not mimic those new monoliths, the skyscrapers, to create a roadway able to handle the massive traffic volume of the future? Why not, indeed.

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