. . . "Four Decades of Pony Power Set"@en . "Four Decades of Pony Power is a 1997 Hot Wheels Collectibles set containing three Pony cars. This set celebrates the 4th generation of the Ford Mustang. The following are contained in the set:"@en . "Four Decades of Pony Power is a 1997 Hot Wheels Collectibles set containing three Pony cars. This set celebrates the 4th generation of the Ford Mustang. The following are contained in the set:"@en . .