The new Polestar 4 is the Swedish EV brand’s first crossover coupe, slotting between the compact and midsize segment. It features the quickest acceleration yet from a Polestar vehicle, a completely new Google-based infotainment system, lots of fresh designs, and the lowest carbon impact of any Polestar. But by far the most controversial feature is the Polestar 4’s lack of a rear window. Instead, the 4 uses a roof-mounted camera system that projects its view to the digital rearview mirror, which