The contact owns a 2020 Nissan Altima. The contact stated that while driving approximately 30 MPH, the collision avoidance system failed to activate, and the vehicle crashed into the rear of a second vehicle. During the crash, the front end of the vehicle was severely damaged, but no air bags deployed. No injuries were reported. A police report was taken at the scene. The vehicle was driven to the home and later to the body shop. The cause of the failure was not determined. The manufacturer and local dealer have not yet contacted. The VIN was not available. The failure mileage was 67,000.