. Two new notable options debuted this year. First, the $619.55 trunk-mounted air conditioning unit – developed by Frigidaire – was available in all closed-body Cadillac models. Second, the dashboard-mounted "Autronic Eye" became available. This automated system, which automatically dimmed the high-beam headlights when a forward-facing sensor indicated oncoming traffic, would become a Cadillac option for nearly the next forty years. Also available – for $325 – was a set of five wire wheels, which hadn't been seen on factory Cadillacs since the 1930s. Wire wheels would occasionally continue to be optionally available through 1992. The minor changes for the 1953 Sixty Special worked wonders, as sales of the $4,304 car was now up to a record 20,000 copies. Weight was up to , and optional wire wheels would add an additional . 1954–1956 All 1954 Cadillacs wore new sheet metal, but unfortunately the $4,683 Sixty Special still looked too much like its lower-priced sibling ($ in dollars ), the Series 62. Wheelbase for Sixty Special was back up to – where it had been in 1949. Refined power steering, from Saginaw, became standard equipment, along with electric windshield washers. New options included a four-way electrically power bench seat, and power brakes from Bendix. As they had been doing since its introduction in 1949, Cadillac was able to pull more power out of its engine, and now it was rated at 230. The eight chrome trim louvers moved lower onto the rear doors, back where they were in 1952. Sales dropped to 16,200 this year – down from 20,000 in 1953. Sixty Special arrived with revised trim and more power (, to be exact) for 1955, and while the $4,342 price was lower than last year, production rose slightly to 18,300 units. The eight chrome louvers – mounted on the lower rear doors since 1950, were replaced by 12 louvers mounted just ahead of the bumper on the rear fenders. Chrome rocker panel moldings – taller than the ones used on Series 62s - stretched from the back of the rear wheel well to the rear bumper. A new grille held a bold eggcrate design, while the rear roof support fashioned a delicate Florentine curve – this design was also shared with the lower-rung Series 62. In back, six vertical chrome louvers were mounted on the panel below the trunk lid – three spaced on each side of the license