The use of a second key to unlock extra potential in a vehicle isn't exactly new: Bugatti's mind-blowing Veyron has a special tumbler-tickler that will let it hit 253mph; the Segway PT offers different fobs for different speeds. But such high-tech foppery on a Mustang? Yes, Ford continues to impress as the domestic marque with the techiest toys, announcing that buyers of next year's Boss 302 can purchase an optional TracKey package, shown after the break. Take the standard black key and you'll have a rip-roaring, 444hp monster. Take the red key, though, and you'll see how fast that pony can run down the rabbit hole. The car det
