2016 Chevrolet Cruze drivetrain & axles problems

Tl* the contact owns a 2016 chevrolet cruze. The contact stated that while driving at approximately 60 MPH, the vehicle began to shake and smoke began to come from underneath the hood of the vehicle. The contact pulled over and placed the vehicle in park however, the vehicle began to reverse on its own. The contact removed themselves from the vehicle and noticed liquid coming from underneath the vehicle. The vehicle came to a rolling stop at which point the contact noticed smoke coming from the vehicle again.

While the engine is running, the transmission suddenly and without warning fails. Car is in gear but doesn't move. First occurrence was when car was parked in the morning and put into reverse to blackout and second occurrence was a couple weeks later when stopped at a red light. Turning the car off for a few minutes seems to temporarily correct the problem. I am worried the transmission will fail suddenly while in an intersection or other dangerous situation