This 1956 Buick Centurion was ahead of its time, as its features were so forward-thinking. The front-seats automatically slid back for ease in entering and leaving as soon as the door was opened. Plus, it included a screen on the dashboard that helped the driver see what was behind the vehicle from the rear-view camera. The two-door, four-seat concept car sported the dual paint colors, which was very popular in the 1950s. The bubble roof was cockpit style, giving this auto a futuristic appearance.