Forty years after they first teamed up, Shelby American and the Hertz Corporation reunited to create a new run of Shelby rental cars, the GT-H. With Ford Racing Handling Pack, 25 extra horses over a stock Mustang GT, and unique Shelby styling, the GT-H brightened up a lot of business trips and vacations. The success of the GT-H led directly to the creation of the Shelby GT Mustang.