I had a similar incident with my 4-month old 2021 Telluride AWD w/ ~3,400 miles. While pulling the Telluride AWD into the garage, the brake pedal suddenly and without warning lost pressure, went limp and dropped to the floorboard. We could not stop the vehicle and crashed into the interior of the garage. The Telluride stopped after ramming into the foundation of the house at which point we could put it in park and brake functionality returned. It was a very frightening experience resulting in damage to the Telluride AWD, my home and personal property. My home surveillance captured the moment and the video is posted on YouTube: