These ads made for the Detroit-based Bohn Aluminum and Brass Corporation were largely dreamed up by legendary illustrator Arthur Radebaugh during the 1940s. Radebaugh's utopian visions and Bohn's desire to appear as a forward-looking company combine for a slick retrofuturistic view of transportation.

It's not a surprise that aluminum and brass are crucial to build these predicted technologies, which will make Bohn one of the most important technologies.

The posters above are from Retronaut, Commercial Motor, Winged Boar, Paul Malon, Business Insider, Last Chance Garage, kustoff and Fulltable.