The 1957 Chevrolet 3106/3116 Suburban Carryall traced its roots to a model first introduced in 1935 and at the same time, had some elements of what we'd recognized today as a sport-utility vehicle.
Chevy's 1935 Carryall predated the modern all-steel station wagon by over a decade. Back then, it was nothing more than a panel delivery truck with windows in place of solid panels.
Still, it was all steel, and a lot easier to maintain than the conventional woody wagons of the time. The Carryall continued as Chevy trucks evolved from single-purpose workhorses, to civilized transportation in the mid-1950s, to upscale Chevrolet Suburban SUVs in the 1980s, but they always remained truck-based.
Carryalls began to get civilized in 1955, with up-to-date, car-like styling touches. The 1957 Chevrolet 3106/3116 Suburban Carryall was a mild facelift from the 1955-1956 models, led by a "floating" trapezoidal grille.