Car Accelerates On Its Own problems of the 2015 Toyota Avalon

On Feb. 5, 2020 at about 6:30 am, my wife was pulling up behind cars stopped at a red light, as she applied the brakes to stop, the car suddenly accelerated, she pressed the brakes as hard as she could, the car continued to drive forward hitting the car ahead of her in line. She could hear the car engine racing and tried to put the car in park, but it went into reverse and rapidly moved backwards, even with her foot on the brake, hit the car behind her. She than once again tried to up the car in park, but put it back in drive and the our car accelerated forward again fill speed hitting the car ahead for a second time, all the time holding her foot down as hard as she could on the brake. After hitting the car ahead for the second time, she pushed the engine stop button and the engine stopped running at full rpm. She noted that there the front tires were smoking alot since the tires were rotaing even though the car was at a stop, due to the engine racing full rpm. Police were called and they dispatched a tow truck for our car. The police never arrived, the tow truck loaded our car and towed it to the aaa storage yard .