Street Car Video brings out what it calls the fastest V3 Cadillac CTS-V in the country to face a Kenne Bell-supercharged Shelby GT500 and two Hellcats pushing past 800 horsepower each. A luxury sedan against dedicated muscle car hardware sounds like a mismatch on paper. Watch the full lineup to see whether the CTS-V’s supercharged LT4 can actually keep up.