The two-door, pillarless 1949 Roadmaster Riviera was among the first production vehicles ever to have this feature. In 1955, Buick also produced the first 4-door car with this feature, as well, the Century Riviera.
Answer Hardtop
The hardtop was introduced on three models in 1949.
Asked by Dan Henry · Last updated 5 years ago · 53.4K views
-thumb.jpg)
