The Chevy Fleetside's origin story goes back to the 1942 Chevrolet Aero-sedan, released right before Pearl Harbor. The focus of this article will be on Chevrolet's first modern post-war vehicle, the 1949-1952 Chevrolet, which was an all-new design that offered the Fleetline body style throughout its four-year run. Chevrolet's Engineering Department completely redesigned the 1949-1952 Chevy, while styling was done under the supervision of GM Design Chief Harley Earl. The Fleetline was an extremely successful body design, although this was not equally distributed between the four-door and two-door Fleetline models. This trend led to the deletion of the four-door from the Chevy lineup after 1951, when only the two-door sedan would remain.