The origins of the Roadmaster name date to 1936 when Buick renamed its entire model lineup to celebrate the engineering improvements and design advancements over their 1935 models.
Buick’s Series 40 model range became the Special, the Buick Century took the place of the Series 60 and the Series 90 — Buick’s largest and most luxurious vehicles — became the Limited. Buick’s Series 80 became the Roadmaster.

Roadmasters produced between 1936 and 1958 were built on Buick’s longest wheelbase and shared its basic structure with senior Oldsmobiles. Between 1946 and 1957, the Roadmaster was Buick’s premium and best appointed model, and was offered in sedan, coupe, convertible and station wagon bodystyles between 1936 and 1948. In 1949 a hardtop coupe, designated “Riviera” joined the model line up; a four-door hardtop joined the model range in 1955.

The 1953 Buick Roadmaster station wagon, Model 79-R, was the last wood-bodied station wagon mass-produced in the United States. Its body was a product of Iona Manufacturing which built all Buick station wagon bodies between 1946 and 1964. Priced at US$4,031, the wagon was second in price to the Buick Skylark. Only 670 of these final woody wagons were produced for 1953.

In 1959, Buick again introduced a model range that represented a significant shift in its body design, and the Roadmaster was renamed the Electra.

Buick offered its customers a brand new design for all their post-war models, including the Roadmaster.
Developed by GM’s Ned Nickles, the 1949 Roadmaster Convertible featured a lower aerodynamic body style, redesigned grille (as compared to the previous Roadmaster models) and revised tail lights. It was fitted with a Fireball 8-cylinder inline engine delivering 150 hp and mated to a Dynaflow torque-converter automatic transmission (a first on the North American market). Other features included hydraulically-operated rooftop, windows and front seat. This model was discontinued in 1958.