I just love the Ranchero/el Camino half-truck, half-car. Another creation of the 1950s that I absolutely love was the two-door station wagons (Courier/Nomad/Safari).
A buddy of mine had a fifty-something Kaiser sedan that opened up into a station wagon. He could get sixty mph in that thing -— in first gear! The car had overdrive which strained the engine to get there, but could do it.