The Dodge Challenger SRT Demon is one of the meanest road-legal machines in a straight line in the world. Speedkore takes things even further at SEMA, though. A pair of turbochargers boost the engine's output to 1,400 horsepower (1,044 kilowatts) at the flywheel. The body looks stock, but Speedkore actually replaces all of the panels with carbon fiber pieces.