protection for front seat occupants in the case of a frontal collision. One airbag was located in the steering wheel hub, while the other sat in place of the glove compartment on the lower passenger side of the dashboard. The glove box was replaced with a rectangular storage compartment, complete with a lockable wood-tone hinged front panel, centrally located under the dashboard. Additionally, there was a driver's side knee bolster panel with an ashtray to the right of the steering column and a small hinged-door storage compartment on the left side. Although the "ACRS" system (also available on top of the line Buick and Oldsmobile models) saved lives, the option was quite expensive and therefore unpopular with customers. It was discontinued after 1976, and Cadillac would not offer airbags again until the 1990 model year. Styling changes for 1975 included a new hood with sharper lines; dual rectangular headlamps flanked by rectangular turn signal/parking lights wrapped around squared-off front fenders resulted in a more unified front-end appearance. A new cross hatched grille also appeared with Cadillac script on the header. Sedans now featured slim fixed triangular quarter windows. New standard equipment included the lamp monitor system, power door locks, high energy ignition and steel-belted radial tires. The big engine, an Eldorado exclusive since 1970, was now standard in all Cadillacs except the new, smaller Seville. Vinyl seating areas were of the same configuration since 1973; Cloth upholstery was available in more colors. In 1976, the grille saw a new finer crosshatching pattern. Cornering lamps received new horizontal silver trim, while taillamps bezels also gained chrome-like trim. Eight different color accent stripes were available. Optional padded vinyl roof coverings were now stamped with an Elk grain pattern. Vinyl seats were continued and new interior trim included plaids, plush velours and knits. Coupe models equipped with the available cabriolet vinyl top, covering the rear-half of the roof, were trimmed with a lower molding that served as a continuation of the door "belt" molding. A Controlled (limited-slip) Differential was included for extra traction. An optional illuminated entry and theft deterrent system was available. A new Delco Freedom battery never needed water. Simulated wire wheel covers were newly available. Other new options included a push-button Weather Band built into the AM/FM stereo signal-seeking radio, plus power passenger and manual driver seatback recliners for 50/50 front seats. Of the 15 standard and six optional Firemist