Adding horsepower and pure nastiness to a car that already has both qualities in spades, the "Plus" prototype mule tacks on another 200 ponies, upping the CTS-V's 400 to 600. The car is a precursor to Caddy's CTS Super V, which besides packing the heavy hp number, will also include a hood and fenders molded from carbon fiber, and, although it has no turbos or superchargers, a hood scoop designed to force cooling air into the engine bay. According to GM, only 500 will be produced, and the price of entry for this limited edition beast is a relatively paltry $65,000.

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