The contact owned a 2020 Tesla Model S. The contact stated that the vehicle was designed with a safety feature that allowed the front driver's seat to move back when the vehicle was in park (P). The contact stated while at a complete stop and picking up her son, she opened and closed the driver's side door to allow the front passenger's side door to open while the vehicle was in drive (D) and the brake pedal was depressed. However, the front driver's seat moved back, causing her foot to release the brake pedal and the vehicle moved forward. The contact stated that she panicked and extended her foot to reach the brake pedal; however, she depressed the accelerator pedal unintendedly. The vehicle accelerated, crashed into a fence, and crashed into an unoccupied vehicle that was parked inside the fence. The air bags deployed. The contact sustained a concussion, pain on the right side of her body, high blood pressure, trauma, loss of memory, dizziness, and bruises on her thighs. The contact had been seeking medical assistance. A police report was filed. The vehicle was towed to a tow lot where it was totaled. The contact attempted to notify the manufacturer of the failure but had not been able to reach the manufacturer. The failure mileage was unknown.