On 23rd July 2022 my son went underneath a reversing XC90 2019 vehicle. The front wheel went over his leg and arm. He miraculously survived and the event was close to taking his life. The vehicle was my wife's car. We are in possession of the surveillance video which shows that the vehicles safety features failed. Although the vehicle was left in the reverse gear, the car was stationary, after having been in a forward motion. This sequence automatically engages the park brake and only deactivated when the pedal is pressed. The pedal was not pressed. In addition the video shows the door was open when the brake was deactivated. Another safety feature which failed to prevent the event. My wife was outside of the car and pushing on the rear of the car, trying to stop it driving over my son. Both my wife at the rear bumper and my son on the floor behind the vehicle on the floor, failed to activate the reverse sensors safety feature. Although a small post did after the vehicle drove over my son. I have a video I can email but is too big for the upload feature. Please let me know how to send the video: be warned the video is not very pleasant. After the event I had the vehicle codes read at the local Volvo dealership. Multiple codes related to failures in the parking brake were identified. I contact Volvo and have been assisting them over the last two weeks with their investigation. They have had the car for 4 hours to run this investigation and I am aware the engineers in Sweden