Andrew Tate (no, not that one) and this gorgeous Octan fuel tanker streamliner, shown paused in the desert as the driver takes a break. 1950s aerodynamics were a bit ropey, so we’re not sure the designs of the time actually generated increased efficiency, but they looked so good.
There’s more to see of Andrew’s streamlined truck on Flickr, and you can make the jump to the cutting-edge aerodynamics of the ’50s via the link above.