Transmission Fluid Leaking problems of the 2012 Hyundai Santa Fe

In stop and go traffic, I took my foot off the brake to coast towards the car in front of me. This pattern had been going on for several miles. I was not touching the accelerator and in fact, my foot was not on the brake either, and the car suddenly accelerated full throttle. I had just a couple of seconds to try to avoid hitting the vehicle in front of me. I swerved to the right, towards the shoulder, but I hit the truck in front of me. I was braking the entire time, but it was not enough to stop the sudden unintended acceleration. My left bumper hit his truck on the right hand side of his bumper. My radiator was damaged and leaked all the fluid out onto the highway. The car was not drivable because of the radiator.