standard Calais features included non-glare rear-view mirror, electric clock, Automatic Climate Controls, padded dashboard, Hazard Warning system, outboard seatbelt retractors and rear cigarette lighters in all styles. A slide-out fuse box and safety front seat back lock for two-door models were additional Cadillac advances for the 1967 model year. Technical improvements included a revised engine valve train, different carburetor, Mylar printed circuit instrument panel, re-tuned body mounts, and a new engine fan with clutch for quieter operation. An energy absorbing steering column became optional. 1967 was the last model year for pillared sedans. For 1968, grilles had an insert with finer mesh and step down outer section which held the rectangular parking lights slightly higher than before. Front and rear side marker lights were mandatory, beginning this year. Rear end styling was modestly altered with the deck lid having more of a rake. The hood was re-designed to accommodate recessed windshield wiper-washers, which now came with three speeds standard. Of 20 exterior paint color combinations, 14 were totally new. On the inside, enriched appointments included molded inner door panels with illuminated reflectors and a selection of 147 upholstery combinations, 76 in cloth, 67 in leather and four in vinyl. New standard features included a Light Group, a Mirror Group, a trip odometer and an ignition key warning buzzer. Like all other Cadillacs, the Calais received the OHV V8 in 1968. 1968 was also the last year for the "stacked" dual headlights, which were replaced with horizontal dual headlights in 1969. 1968 was also the last year for vent windows. Shoulder belts became standard for both driver and right front passenger seating positions on all Cadillacs (except convertibles) built effective January 1, 1968. In 1969, the Calais was restyled. A new front fender treatment similar to the Eldorado helped to emphasize a stronger horizontal design line. Rear quarters were extended to give the car a longer look. Dual horizontal headlamps were positioned in the outboard step down areas of the all-new grille. The roofline was squarer and the rear deck and bumper more sculptured. A new ventilation system eliminated the need for vent windows, which provided a longer sleeker look and improved visibility. New standard features included front center seat armrests. Front seat headrests were now mandatory and the ignition switch was moved from the instrument panel to the steering column, which locked both the steering wheel and transmission selector lever