Just when you thought the CT6 couldn’t get any better, Cadillac released a new flagship version called the CT6 V-Sport. Under the sedan’s beautiful suit is a newly-developed 4.2-liter biturbo V8 pumping out 550 horsepower (410 kilowatts) and 627 pound-feet (850 Newton-meters) of torque. The new engine with an aluminum block and pistons is paired with a 10-speed automatic gearbox and a limited-slip rear differential, while stopping power is provided by 19-inch Brembo brakes.