This undated photo provided by Chrysler Group LLC shows the 2015 Dodge Challenger SRT Hellcat. Popular Mechanics magazine calls the top-of-the-line, new-for 2015 Challenger SRT Hellcat the “wildest muscle car Detroit (has) ever built” and named it “Best Muscle Car” for 2015. (AP Photo/Chrysler Group LLC, Andrew Yeadon)

Believe it: 707 horsepower under the hood

Popular Mechanics magazine calls the top-of-the-line, new-for 2015 Challenger SRT Hellcat the “wildest muscle car Detroit (has) ever built.”