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The Mustang was developed as a
, sporty, open-top
in 1964. Managers at Ford originally predicted it would sell 100,000 of the cars a
. However, the Mustang became the most
vehicle launch
the Ford Model A in 1927. Ford sold over 400,000 Mustangs in 1965 and recorded
of over one million a year later. The car's sporty looks made it very
. This led to other car makers producing what people called "muscle cars". These included the Chevrolet Camaro and Pontiac Firebird. A car
said: "The heritage of the Mach 1 invokes a
of speed." Ford is hoping the new Mustang Mach 1 will stay in people's hearts and add to its long
.