Cadillac CTS-V Black Diamond Edition

You thought the Cadillac CTS-V was bad-ass? You're right, but the CTS-V Black Diamond is bad-asser. Or, as Cadillac puts it, it's a "finely crafted, tailored tuxedo." We like our description better. No, you don't get any performance enhancements in the Black Diamond, but then, you don't really need any. The 556-horsepower supercharged LSA V-8 under the hood is more than up to any task. But now its sheetmetal looks like a professional assassin's car. And it's from the factory. The reason for the Black Diamond name? This is the first use of high-tech optical technology firm JDSU's proprietary...