30. Buick Riviera
Buick offered the original Riviera as a 1963 model. But in 1971, the Riviera became a design classic with the introduction of the iconic boat tail design. It was in production for only three years but left a big mark on the industry with its unusual yet elegant styling.

With its powerful engines, decent performance, and overall uniqueness, the 1971-73 Riviera was one of the best personal luxury coupes. And it was a true ‘70s classic. Buick continued to produce Rivieras until 1997, but never repeated the success of this generation.