When the new 840-horsepower Dodge Challenger SRT Demon raced down the drag strip to open the 2017 New York Auto Show, Dodge unleashed the ultimate street-to-strip car. Now, the brand is following up on its performance car mantra, introducing the new 2018 Dodge Challenger SRT Hellcat Widebody, answering enthusiasts who have been clamoring for a factory-production Hellcat with even more grip.