These days, the Sport Utility Vehicle segment has become a dominant force in the automotive industry. Anywhere you look, you'll see dozens of SUVs, whether they're small crossovers or full-size family-haulers. In many cases, these versatile vehicles outnumber trucks, sedans, wagons, and hatchbacks. But back in the 1960s, the idea of an SUV was just beginning thanks to innovative models like the Chevrolet Suburban.