the concept car called the Buick Y-Job. The 4-door phaeton was discontinued. Coupes adopted the Sedanet fastback style that was introduced on 1941 on the Century and Special. The new one-piece hood was double-hinged so that either side of the engine compartment could be opened, while in later updates the hood would open at the front and extend up and towards the passenger compartment. At the beginning of 1942, new automobiles were available only to those in occupations deemed essential to the war effort. By mid-January, cars with no exterior chrome trim apart from the bumpers were being produced. By February passenger car production was shut down completely. Despite the abbreviated model year, a total of about 8,400 were sold. When postwar automobile production resumed in the 1946 model year, chrome was more sparingly applied, swept-back fenders were fitted to sedans as well as coupes, and a war-inspired "bombsight" hood ornament was adopted. The instrument panel was two-toned with woodgrain facings except on convertibles which used body-colored panels. Series identification was found on cloisonne emblems centered in the bumper guard front and rear. Compound Carburetion was discontinued and the compression ratio was reduced to 6.60:1. The 1946 Roadmaster's horsepower rating went from 165 to 144. Torque on the other hand was not affected. Nevertheless, Roadmaster's I-8 still produced more horsepower than a top-of-the-line Chrysler's. Owing to wartime inflation, prices were substantially higher than those of pre-war models. The biggest change was in sales proportions. Roadmaster increased its share of Buick sales from 4% in 1941 to 20% in 1946, with a total of about 31,400 sold. In 1947 a new stamped grille with a separate upper bar was used. The Roadmaster name appeared in red-filled script on a chrome button within the bumper guard crossbars, front, and rear. All new was an Estate wagon body style. It sold 300 units and became the top of the line in the station wagon market. In 1948 a series script appeared on the front fenders and the white Tenite steering wheel that had been used previously was replaced with a black version. This also matched the change from a two-tone woodgrain instrument panel to a two-tone gray instrument panel, with silver-finished instruments. A new optional custom trim option was offered, consisting of cloth upholstery with leather bolsters with the robe cord cover and lower door panels trimmed in leatherette. Convertibles acquired power windows,