Loud Engine Noise problems of the 2022 Audi Q7

The incident happened on octber 2nd. I was driving and the vehicle just stalled in the middle of the highway with a loud noise without any precaution. There was absolutely no sign or no engine light that was displayed. Luckily, johns creek police department vehicle in georgia was behind me and he helped me to push the car to the side of the road. I reached out to Audi help and a two truck was dispatched. This was a critical safety issue since the vehicle stalled in the middle of the road. The vehicle is still with the dealership - Audi north atlanta, georgia. The dealership explained to me (yet to receive a written statement) that this a failure in engine and Audi USA have agreed to replace the engine. As a consumer I believe, lives would have been lost had there not been a police car behind me at the right time. It would have been a major accident since anyone would have hit me, occupants from the rear. I strongly urge and request nhsta to investigate and follow-up please.