CLEARWATER, Fla., Aug. 22, 2017 /PRNewswire/ -- "Big Daddy" Don Garlits, the 17-time NHRA World Champion, introduced the world's only Dodge Challenger HellScat to automobile enthusiasts this past weekend at the Mopar Nationals in Hebron, Ohio. The 1,000-plus horsepower HellScat, a play on...