May 29 2022 I parked my new RAV4 PRIME EV on an incline and left the vehicle running to keep the a/c cold & radio playing. The car was securely parked atop an incline facing up the incline while still running. While the vehicle sat idle I walked my dog waiting to clean up after him. He was taking a long time so I decided to turn off the vehicle. I walked over to the running vehicle in park, opened the driver door and pressed the off button to turn the vehicle off. This caused the vehicle to roll backwards down the incline while in the park position making a loud click noise. It made the click noise when initially it powered off and attempted to relax into the park position but did not catch, it clicked and began a roll backwards down the hill. I was caught in the driver's door jam and was dragged down the hill along with vehicle. While picking up speed it also made an audible clicking noise that witnesses recall coinciding with the increase in speed the noise increased in intensity. The vehicle dragged me stuck in the door jam into a busy 4 lane roadway where the driver door & my body met impact with a car resulting in the RAV4 rolled on my foot, ankle and leg resulting in severe damage. The impact was at the driver door where I was pinned causing the door to hyperextend. The RAV4 couldn't be moved once stopped due to a safety feature not allowing shifting out of park while the driver door was sensed open. I was pinned for 20 minutes+ under the front driver side wheel. The R