An entirely new generation of the 7-series, long BMW's flagship sedan and the brand's most luxurious and advanced product, has debuted for the 2023 model year. The formula doesn't change much from the current car's: powertrains include a turbocharged inline-six and a twin-turbo V-8, with a plug-in hybrid joining the lineup later. On our initial test drive, we found that the 7-series veritably floats down the road. Its handling is a little lither than the 2022 car's thanks to some changes to the chassis and suspension, including a new rear-wheel steering system. Its driver-assistance tech provides a hands-free driving mode for highway slogs but the car's showstopping feature is an optional 31.3-inch rear entertainment display called Theater Screen that drops from the ceiling and streams TV and movies using the onboard Wi-Fi system.