The contact owned a 2007 Toyota Prius. The contact stated while driving approximately 30-35 MPH, the vehicle in front of her slammed on the brakes, causing her vehicle to crash into its rear end. The air bags failed to deploy. There were no warning lights illuminated. The contact sustained a severe whiplash. The contact was able to exit the vehicle through the front passenger side window. The contact stated that her son transported her to the hospital, where she was informed that she had sustained a concussion and neck abrasion injuries. A police report was filed. The vehicle was towed to a collision shop, where it was totaled. The dealer was not notified of the failure. The manufacturer was notified of the failure but did not provide any assistance. The failure mileage was approximately a 180,000. The VIN was not not available.