The Demon’s in the details with Dodge’s appalling car Fresh York – Leave behind muscle cars. No one does steroid-enhanced cars like Dodge. Fiat-Chrysler’s spectacle brand introduced the much-anticipated sequel to its 707-horsepower, 6.2-liter, supercharged V-8 Challenger SRT Hellcat here Tuesday night ahead of the Fresh York Auto Showcase: the 840-horsepower Challenger SRT Demon.