Dodge unveiled what it claims is the fastest muscle car ever: the 2018 Challenger SRT Demon with a devil of a kick—808 horsepower and 717 lb-ft of torque on 91 octane gas for the street and a ridiculous 840 hp and 770 lb-ft of torque on 100-plus high-octane race fuel for the track. There is enough launch power to pull a wheelie, and Guinness World Records certified the production car as traveling 2.92 feet with the front wheels off the ground.