The T-5 designation also applied to the 13 prototypes that were built before the first generation Mustang went into production. The 1963 Ford Mustang II concept car also briefly bore the T-5 designation. In 1962, Ford Vice-president Lee Iacocca leading the Fairlane Group (a committee of Ford managers and executives) began to work on a front-engine, four-seater design, known as the T-5 in company parlance, and later, the Mustang. To speed development, Ford Falcon and Fairlane components were used. Nearly the only design element that remained from the original Mustang I were the fake louvers that recreated the radiator scoops of the two-seater, and its name, emblazoned on its side panels as the "galloping Mustang" logo.