Porsche‘s four-door Panamera has a new flagship model, and despite what you might expect it’s actually a hybrid. Still, the 2018 Panamera Turbo S E-Hybrid is no pious Prius. Instead, it’s a 680 horsepower, 192 mph monster with a nod to being green. Indeed, with its sky-high horsepower and a heady 626 lb-ft. of torque, only the limited-production 918 Spyder …