1949 Pontiac Streamliner Sedan.....first freshly styled Pontiac after World War II. 1946 through 1948 models were basically carried over from pre-World War II with minor grille and trim changes. GM first came out with all new post-war designs on the 1948 Cadillac and Oldsmobiles. Buick, Pontiac, and Chevrolet had to wait until the 1949 model year for the new styling.