2024 BMW X4 Power Train Problems

We had snow this afternoon and my wife drove the car home from work. We live on a private road and have a steep driveway. I had her park the car in the road while I plowed the driveway. There was only 1-2” of snow on the ground. My wife existed the car. It appeared to be off and in park meaning the engine was not running and the car sat still on a grade. In hindsight, I should have had her set the park brake. My wife went down to her house taking her key with her. I was plowing the driveway. The car had been sitting still on the road for at least 15 minutes. When I was plowing, I had the other key in my pocket. When I got next to the car while still operating my plow, I noticed the taillights came on. Next, the car...