Well, it’s official, one of the kings of speed, Hennessey Performance, has built its 10,000th vehicle, a Heritage Edition Ford Mustang. Like virtually all Hennessey cars, the secret sauce is mostly under the hood. In this case, the Mustang’s supercharged 5.0-liter V8 cranks out 808 horsepower, or 75% more than the standard Mustang GT on which it's based. Hennessey says 0-60 mph is 3.3 seconds with a top speed of over 200 mph, and given their blazing track record, we have no reason to doubt them!