Dodge : 707-HORSEPOWER DODGE CHALLENGER SRT HELLCAT EARNS EPA HIGHWAY FUEL-ECONOMY RATING OF 22 MPG September 17, 2014 By Tyler Hopper 0 SharesTweetSharePinShare The 2015 Dodge Challenger SRT Hellcat, the most powerful muscle car ever, now boasts a fuel-economy rating as compelling Read more here: Newspress 0 SharesTweetSharePinShare