2020 TOYOTA SUPRA Power Train Problems

I WAS STOPPED IN THE LEFT TURN LANE AT A RED LIGHT. THE TURN ARROW SWITCHED TO GREEN SO I TOOK THE U-TURN. I WAS IN THE MIDDLE OF THE U-TURN GOING ABOUT 15 MPH, WHEN THE CAR BEGAN TO ACCELERATE ON ITS OWN. THE CAR OVERSTEERED, AND THE REAR PORTION OF THE CAR KICKED OUT TO THE RIGHT SIDE. I CORRECTED BY COUNTERSTEERING AND REMOVING MY FOOT FROM THE ACCELERATOR PEDAL. THE CAR CONTINUED TO ACCELERATE, CAUSING ME TO OVERSTEER TO THE LEFT SIDE THIS TIME. IN AN EFFORT TO STOP THE CAR, I SLAMMED ON THE BRAKES WHILE OVERSTEERING. THIS CAUSED THE CAR TO ROTATE COUNTER CLOCKWISE, AND IMPACTED WITH THE CURB AND ENDED UP ON TOP OF THE MEDIAN. THERE WAS SIGNIFICANT DAMAGE TO THE REAR PASSENGER SUSPENSION AND BODY. TOYOTA PULLED DATA FROM THEIR ELECTRONIC DATA RECORDER, AND CONCLUDED THAT IT THERE WAS NO MALFUNCTION WITH...