Transmission Noise problems of the 2016 Subaru Impreza

I was driving to a thanksgiving gathering, when all of a sudden the car julted. It was very odd felt almost like a pin was put in the transmission forcing the tires to stop spining. But was very brief. After another 0. 5 miles of driving on the freeway at 70mph it happened again but continuously with loud grinding and crunchy noises. After puling over the car was smoking. The transmission was extremely hot. No lights warning lights came on. Got a tow truck and it struggled to pull the car on to the trailer bed. And while it was rolling on you could still hear the grinding noises. We had 4 people in the car 2 small 5ft 2in women and 2 makes winning 180 lbs. We had food and duffle bags in the trunk and it was 40 degrees fahrenheit outside we were 1 hour into the trip and on flare roads.