2017 Cadillac CT6: The 2017 Cadillac CT6 is Cadillac's flagship sedan. Poised to compete against the Audi A8, BMW 7-Series, Lexus LS, and Mercedes-Benz S-Class, the CT6 seats five and a plug-in hybrid model joins the lineup for 2017.There are three engine choices: A 2.0-liter turbocharged 265-horsepower four-cylinder, a 3.6-liter V6 that makes 335 horsepower, and a twin-turbocharged 3.0-liter V6 that makes 404-horsepower. All engines are paired with an eight-speed automatic transmission, and the CT6 is available with rear-wheel or all-wheel drive. The plug-in combines a 2.0-liter turbocharged four-cylinder and two electric motors for 335 total system horsepower. The plug-in can run on electric-only power for up to 30 miles.Key available features include a camera that can record forward and rear views while the car is in motion (and 360-views when the alarm is triggered), rearview camera mirror, night vision, advanced park assist, pedestrian collision mitigation, 4G LTE hotspot, Apple CarPlay, navigation system, infotainment system, heated front seats, heated rear seats, cooled front seats, and quad-zone climate control.Available safety features include the standard suite of airbags (including knee), ABS, traction control, stability control, park assist, and collision mitigation.The 2017 Cadillac CT6 starts at $53,495, not including destination. The CT6 is built in Detroit/Hamtramck, Michigan.