On December 23, 2025, at approximately 9:45 AM, I was operating my Tesla Cybertruck with Autopilot engaged under normal driving conditions. There was no inclement weather, the roadway was straight, and visibility was clear. While driving, the vehicle suddenly veered off the main roadway without warning and traveled off-road, ultimately colliding with a tree. The movement was abrupt and not consistent with normal lane departure. I immediately attempted to correct the direction of the vehicle; however, the vehicle did not respond appropriately to my steering input and felt unresponsive during the event. At no point did I intentionally steer off the roadway. The loss of control was unexpected given the road conditions and environment. This incident raises concerns about the reliability and safety of the Autopilot/driver assistance system and its ability to maintain lane control and allow driver override when needed.