On January 28, 2026, the vehicle (a Tesla Model Y) was operating with the Full Self-Driving (FSD) system actively engaged in normal highway traffic conditions. Without any prior warning messages, chimes, or system alerts, the FSD system abruptly disengaged approximately 1 second before the vehicle steered into a concrete road divider. Component failed: The Tesla Full Self-Driving (FSD) software and underlying perception/control systems failed to maintain the lane and abruptly handed over control with insufficient time to react. The vehicle and its data are available for inspection. Safety risk: The sudden, sub-second disengagement provided the driver with zero time to react, take manual control, or perform an evasive maneuver. This system failure directly resulted in a high-speed collision with a road divider, causing significant vehicle damage and physical injuries to the driver that required medical treatment. Inspection/Confirmation: The vehicle is currently subject to an open insurance claim and has been evaluated for repair. Warnings: There were no warning lamps, messages, or requests for the driver to take over prior to the immediate 1-second window before the crash. Evidence: I have downloaded and preserved the complete Event Data Record (EDR) and the multi-angle dashcam video files. The EDR data mathematically documents the sub-second disengagement, and the video files confirm normal traffic flow with no external hazards forcing the collision. I can provide the E