Mustang's First Day

• The first Mustang was unveiled to the public at the New York World's Fair on April 17, 1964. By the end of the day Ford had sold over 22,000 Mustangs. Within two years over a million Mustangs had sold.
  
  

Pony Cars

• The Mustang launched the popularity of a class of cars called pony cars, the smallest class of muscle cars. Some say they are too small to be categorized as muscle cars. Technically, the Plymouth Barracuda was the first pony car, going on sale two weeks before the first Mustang, but the Barracuda never became as popular and term was derived from the Mustang.
  
  

Customizable

• The 1964½ Mustang came in hardtop or convertible, was a two-door car, and had a back seat. Beyond that, there were many options. The goal was to keep the price under $2,500, but still make the Mustang customizable.