Plymouth Barracuda
Introduced just two weeks before the Mustang in April of 1964, the Barracuda was the first Pony car ever made. It was based on the standard Valiant platform. Since the automotive world was anticipating the Mustang due to reports coming from Ford, Chrysler decided to introduce a car in the same segment (via Cuda Brothers).
The Barracuda had pretty modest underpinnings with three engines available. It featured two straight-sixes and one V8. So designers had to develop an exciting design to attract buyers. The 1964 Barracuda had a big panoramic rear glass and a sleek fastback body line. This was pretty advanced for the period. The best Barracudas were 1970-71 models, which could be ordered with the mighty Hemi.