Futurama by Norman Bel Geddes, 1939

“Speed is the cry of our era,” “Futurama” designer Bel Geddes explained, and he envisioned highways with curved sides that allowed cars in the outer lanes to travel safely at 100 miles per hour. In the world of the future, everything was streamlined, from the curved steel-and-glass skyscrapers in the cities to the teardrop shape of the vehicles that whizzed down the streets on automated radio control, while pedestrians strolled above them on second-story-level sidewalks