Streamliners used the larger B-body and, except for the station wagons, used fastback styling. The 1941 Super models with folding center armrest were known as Chieftains in 1942. All Pontiacs looked lower, heavier and wider. Extension caps on the front doors lengthened the forward fender lines. The hood extended back to the front doors, eliminating the cowl. The grille, bumper and hood were widened and headlamps were further apart. Long horizontal parking lamps sat just above the vertical side grilles.The horseshoe shaped center grille had horizontal bars and a circular emblem in the middle of the upper main surround molding. The first postwar Pontiac available (September 13, 1945) was the Streamliner coupe, which remained the sole product for a time. The Chieftain trim level of 1942 was renamed the Deluxe trim level in 1946. Styling highlights of Pontiacs were wraparound bumpers, a massive 14 blade grille, new nameplates and concealed safe-light parking lamps. Streamliners could be identified by straight back Indian moldings on the rear hood ornament chrome beltline moldings and bright moldings on the "speedline" fender ribs. They also had longer front fender crown moldings and were generally larger in size. Lettering on hood emblems and badges placed forward of the "speedlines" identified Eights. Interior trim on passenger cars were in gray striped cloth. Station wagons had three seats in standard trim, two seats in Deluxe trim and used imitation leather upholstery and passenger car style interior hardware. Ranging in price from $1942 for a standard Six to $2047 for a Deluxe Eight, Streamliner station wagons continued to be the most expensive Pontiac model. A total of 92,731 Streamliners were sold in 1946, accounting for over two thirds of all Pontiacs. In 1947 the "Silver Streak" styling theme was continued, now with five bands of chrome on hoods. All Pontiacs had new grilles with four broad gently bowed horizontal bars. Hoods and fenders were protected by an inverted steer's horn shaped bar incorporating a die cast plate with indianhead relief. Interiors for sedans and coupes were redesigned with Berwicke beige panels for dashboard and windows. Windshield, door and garnish moldings were finished in Autumn Brown with dado stripe border moldings. All coupes and sedans were fastbacks with full-loop around window moldings. Streamliner station wagons ranged in price from $1992 for a standard Six to $2111 for a Deluxe Eight, again making them Pontiac's most expensive model. Sales of Streamliners totaled 128,660 in 1947, or nearly 56% of all Pontiacs sold. In 1948 a new Pontiac styling included triple "Silver Streaks," a horizontal grille theme with vertical shaft, and round taillights. The word "Silver Streak" was carried on the sides of the hood with eights having an "8" placed between the two words.Streamliners were again larger and more expensive than other Pontiacs. All Streamliners, be they 2-door or 4-door fastbacks, or station wagons, now came standard or Deluxe. Deluxe models were distinguished by spear moldings on front fender, bright gravel guards, and chrome plated wheel discs on all cars except wagons. Deluxe interiors had two tone trims with pillow-and-tuft seatbacks, quarter sawed mahogany dash and window trim, electric glovebox door clocks, Deluxe steering wheels and other rich appointments.Standard Streamliner station wagons had tan imitation leather seats and Deluxe wagons had red upholstery of the same type.Station wagon prices ranged from $2364 for a standard Six to $2490 for a Deluxe Eight, making them Pontiac's most expensive model. In 1948 160,857 Streamliners were sold, accounting for nearly 66% of all Pontiacs.Perhaps the biggest story of 1948 for Pontiac was the addition of Hydramatic automatic transmission as an option. As of 1948 only General Motors sold cars with fully automatic transmissions and the only other way to get one was to buy a higher priced Cadillac, Buick or Oldsmobile. Chevrolet would not introduce Powerglide until 1950, Ford FordoMatic until 1951 (Lincoln would start buying Hydramatics from GM in 1949), and Chrysler, PowerFlite on Imperials, until 1953. Hydramatic proved very popular with a total of 171,946 Pontiacs sold with it, or about 71% of all Pontiacs, and with 122,327 Streamliners equipped with it, or about 76% of all Streamliners, in its first year.Since Hydramatic was still only optional on Cadillac and Oldsmobile, and Dynaflow optional on Buick Roadmaster, given the total sales of Cadillac (50,619), Oldsmobile (173,661) and Buick Roadmaster (80,071), and the fact that Dynaflow was only introduced in the middle of the model year, this implies that probably over 40% of all cars sold with automatic transmissions in 1948 were Pontiacs.