The contact owns a 2015 Ford F-150. The contact stated that while driving at an undisclosed speed uphill, the accelerator pedal was depressed, but the vehicle failed to accelerate as intended. No warning lights were illuminated. The contact stated that the transmission was operating at a high speed, but the vehicle operated at a low speed. Within seconds, the speed independently increased, and the vehicle became uncontrollable. The vehicle rolled backward into an embankment and then into a concrete-lined ditch, bouncing out the other side. In addition, the contact noticed smoke coming from the tailpipe. The vehicle was driven to a nearby friend's residence. A police report was filed. The contact was taken to a local medical center, having sustained a bruised forehead, a bruised left ankle, and a bruised left knee. The contact was receiving continued treatment for the left ankle and left knee injuries. The insurance company did not inspect the vehicle, and the contact stated that the vehicle was only covered under liability insurance. The contact received a recall notification for NHTSA Campaign Number: 26V237000 (Power Train); however, the parts were unavailable. The manufacturer was not made aware of the failure. The failure mileage was approximately 183,115