Serving tech enthusiasts for over 25 years. TechSpot means tech analysis and advice you can trust . First look: The 2026 Polestar 4 removes a feature that has defined automotive design for more than a century: the rear window. In its place, the vehicle uses cameras and sensors to provide rearward visibility, a move that is dividing opinion. Instead of a traditional rear window , the Polestar 4's glass roof extends back to meet the rear deck, leaving no glass behind the rear seats. The trunk is built into the body lines, so the surface stays smooth and uninterrupted. Inside, the glass roof ends just past the rear headrests, with an enclosed section behind it. The system integrates side mirrors, ultrasonic sensors, four short-range cameras for 360-degree imaging, and a dedicated rear-facing camera. The feed appears on a screen mounted at the top of the windshield, designed to resemble a conventional rearview mirror. Rear visibility is already limited in many modern SUVs.…