The Buick Roadmaster is an automobile that was built by Buick from 1936 to 1958, and again from 1991 to 1996. Roadmasters produced between 1936 and 1958 were built on Buick's longest non-limousine wheelbase and shared their basic structure with entry-level Cadillac and, after 1940, senior Oldsmobiles. Between 1946 and 1957 the Roadmaster served as Buick's flagship. When it was resurrected for the 1991 through 1996 model years, it became the marque's largest vehicle. The Roadmaster sedan, a C-body vehicle over its eight previous generations, shared the B-body for the first time in its history. The generations for the Buick Roadmaster are: 1st Gen (1936-1937), 2nd Gen (1938-1939), 3rd Gen (1940-1941), 4th Gen (1942-1948), 5th Gen (1949-1953), 6th Gen (1954-1956), 7th Gen (1957-1958), and 8th Gen (1991-1996).