After the groundbreaking success of the 1955-57 "Tri Five" models, Chevrolet had some big shoes to fill in subsequent years. Fortunately, the automaker managed to launch the successful Impala line the very next year, with the 1958 model becoming an instant classic. And rather than resting on its laurels, Chevrolet redesigned the Impala again the very next year, producing a design that hit the peak of the tailfin styling trend in 1959.