This quick one found via Modern Mechanix features a ‘City within a City’, featuring New York’s Interstate Commerce Center, envisioned in 1946 as a dreary, hypermobilized utopian hub.

“This unique “in-building highway,” 32 feet wide and three-quarters of a mile long, and rising at a grade of only 6%, will be one of the outstanding features of the proposed Interstate Commerce Center building to be constructed by the Tishman Realty and Construction Company of New York. Thirteen stories high and covering an area of four square blocks strategically located on the threshold of the world’s commercial marts and routes on lower Manhattan, the new building will be a revolutionary step in architectural design aimed at helping industry meet the inevitable changes and expansions of the postwar industrial era.”

:: images via Modern Mechanix