American tuning firm Hennessey has crafted some pretty insane vehicles over the years. One of its most recent tunes is based on the Cadillac CTS-V Sport Wagon, which leaves GM�s factory with a 556-horsepower 6.2-liter V8 lump, but once Hennessey�s engineers perform their magic under the hood, output is lifted to 650 horsepower.
To show off the tuned CTS-V Sport Wagon�s potential, the Texas-based company brought the Cadillac to the track and drag raced it first against a stock 480HP Porsche 911 Turbo [997] and then a standard 485HP 2011 Nissan GT-R. Watch what happened in the video after the jump.
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