All Oldsmobiles featured the "speed bar" speedometer. Introduced in 1959, the speedometer used a rolling black cylinder with sections painted brilliant green, yellow and bright red. As the car went from a standing stop forward in speed, the cylinder rolled, first exposing the green in a window that matched the numeric speed on stationary speed dial for low speeds, yellow at moderate speeds, and finally red at highway speeds. Drivers who topped the car over 100 mph moved the cylinder into an area where only the black base color was visible. For 1963, Oldsmobile would revert to a standard speed needle sweeping over a calibrated set of speeds instead.
1961-1964 Oldsmobile 88