AMC AMX
The AMX was a unique muscle car because it only had two seats. The two-seater design was the only thing that differentiated the AMX from the Javelin. The 390 V8 engine produced 360 HP. Coupled with the short wheelbase of the car the AMX had better performance than other AMC models. The AMC AMX had an interesting concept, although the final product might not have been marketed most effectively (via Hemmings).
The styling of the car was also more attractive than previous offerings by AMC. The problem was that the two-seat design of the car was limited, and consumers gravitated toward four-seat options on the market at the time.