The contact owned a 2025 Toyota Corolla. The contact stated while attempting to drive from a complete stop, the accelerator pedal was depressed, but the vehicle failed to respond as intended. The front end of the vehicle lowered down while the rear-end rose and made an abnormal squealing sound. There was no warning light illuminated. The contact's husband assisted the contact in driving, and the vehicle was able to respond after several attempts; however, the contact's husband stated that the vehicle felt like the parking brake was engaged unintendedly. The vehicle was taken to the dealer, where the failure could not be duplicated; however, an unknown part was replaced. The contact stated that while driving 35-45 MPH, the vehicle in front of the contact's vehicle slammed on the brakes. The contact then depressed the brake pedal, but the pedal travelled down and rested on the floorboard. Additionally, the front end of the vehicle lowered while the rear end of the vehicle rose, and the vehicle crashed underneath the rear-end of the truck. There was no warning light illuminated. The air bags failed to deploy. Toyoya Safety Connect system automatically connected the contact to a representative. The contact was transported to the hospital by emergency units. The contact sustained a fractured sternum, three fractures on the back, and the contact was hospitalized for 3 days. The contact's husband later arrived at the hospital and received medical assistance. The contact's husband s