The contact owned a 2019 Honda Civic. The contact stated that while her son was using the vehicle's cruise control at approximately 65 mph, he attempted to activate the brakes however they failed to stop the vehicle. The driver attempted to use the emergency braking system within the vehicle however that too failed to stop the vehicle. As a result, he rear-ended a truck in front. The air bags did deploy. A police report was filed. The driver received injuries to both legs, shoulders, arms, head and neck that required medical attention. There was damage to the truck rear-ended. The vehicle was towed and deemed totaled. The dealer was not made aware of the failure. The manufacturer was made aware of the failure and opened a case regarding the matter. The approximate failure mileage was 29,000