Image Credit: Hennessey Performance / YouTube.Hennessey Performance has officially entered peak muscle-car insanity territory. The Texas tuner recently released footage of its outrageous Demon 1700 prototype doing something that sounds physically unnecessary and deeply terrifying at the same time: a rolling burnout at roughly 100 mph.The heavily modified Dodge Challenger Demon already started life as one of the wildest factory muscle cars ever built. Hennessey looked at Dodge’s 1,025-horsepower Demon 170 and apparently decided it needed another 700 horsepower and a pair of giant turbochargers.The result is the Hennessey Demon 1700, a twin-turbocharged monster producing a claimed 1,700 horsepower from a fully reworked 7.2-liter HEMI V8.AdvertisementAdvertisementAccording to Hennessey, the car generated 1,355 horsepower and 1,202 lb-ft of torque at the wheels during dyno testing at 23 psi of boost. That kind of power turns acceleration into something bordering on violent.Hennessey Rebuilt The Demon From The Ground UpImage Credit: Hennessey Performance / YouTube.Despite the familiar Challenger shape, this is far more than a tuned Dodge Demon. Hennessey says the Demon 1700 required a massive engineering effort involving a bespoke twin-turbo system, upgraded fueling, reinforced driveline components, and extensive calibration work.The company fitted the car with Precision turbochargers, upgraded internals, a strengthened transmission, a billet torque converter, and a heavily revised rear differential. According to company president Alex Roys, the engine alone costs roughly $100,000 before installation.Hennessey Special Operations, the division responsible for the project, spent years developing and validating the car. The tuner says only 12 examples will be built worldwide, instantly making it one of the rarest and most extreme modern muscle cars ever created. Pricing starts above $200,000, and buyers even have to supply the donor Demon 170.The 100-MPH Burnout Sounds Completely AbsurdImage Credit: Hennessey Performance / YouTube.The highlight of Hennessey’s latest video comes during a high-speed validation run at the Pennzoil Proving Ground test facility. While accelerating hard, the Demon 1700 simply overwhelms the rear tires and begins laying down a burnout while already traveling around 100 mph.AdvertisementAdvertisementEven the people inside the car seemed shocked by what was happening. After climbing out, Roys described it as “the longest roller I think I’ve ever been a part of,” while laughing in disbelief. The footage makes it clear that this Demon is borderline unhinged.At one point, Roys openly admitted the car “wants to kill me bad” after disabling the electronic driver aids. He later warned viewers not to try driving the car with everything switched off unless they genuinely know what they are doing. Considering the car can apparently vaporize tires deep into triple-digit speeds, that feels like very reasonable advice.Twin Turbos Completely Change The Demon’s PersonalityImage Credit: Hennessey Performance / YouTube.One of the most noticeable differences between the factory Demon 170 and Hennessey’s creation is the sound. Dodge’s original car relied on a massive supercharger that delivered the signature Hellcat whine enthusiasts know and love.The Demon 1700 replaces that soundtrack with the noises of enormous turbochargers inhaling air like jet engines. Throughout the test drive, the car emits violent turbo spool, blow-off valve chatter, and thunderous V8 noises that make it sound more like a drag car than a street machine.AdvertisementAdvertisementEven Hennessey’s own team seemed stunned by the experience. Several people in the video compared the sound to a commercial airliner taking off, with one employee saying he had never heard another turbocharged car quite like it. The transformation gives the Demon an entirely different character compared to the already outrageous factory version.This May Be The Final Form Of The Muscle CarModern muscle cars are rapidly disappearing as emissions regulations, electrification, and changing market priorities reshape the industry. The Challenger itself is already gone in its original form, making builds like the Demon 1700 feel almost rebellious.Hennessey clearly understands that reality. This project feels like an unapologetic celebration of excess before the automotive world changes forever.The company says the Demon 1700 was never intended to be a polished hypercar chasing lap records. Instead, it exists purely to deliver absurd straight-line power and an overwhelming driving experience. Judging by the footage, mission accomplished.Hennessey Is Keeping Old-School Horsepower AliveWhile many automakers continue moving toward EVs and downsized turbo engines, Hennessey remains committed to massive horsepower numbers and barely controllable acceleration. The company built its reputation on pushing American performance cars to ridiculous extremes, and the Demon 1700 might be its most absurd creation yet.AdvertisementAdvertisementThe original Dodge Demon was already considered excessive by almost every standard imaginable. Somehow, Hennessey looked at a 1,025-horsepower factory muscle car and decided it still was not enough. Now the result is a twin-turbo monster capable of doing burnouts at 100 mph while terrifying the people lucky enough to drive it.If you want more stories like this, follow Guessing Headlights on Yahoo so you don’t miss what’s coming next.