CONSUMER WAS INVOLVED IN A COLLISION WHERE THE VEHICLE WAS HIT IN THE REAR BY A CAR TRAVELING APPROXIMATELY 50MPH. CHILD WAS RESTRAINED IN BOOSTER SEAT IN THE DRIVER'S REAR POSITION. UPON IMPACT THE CSS CAME FROM UNDER THE CHILD AND FLIPPED FORWARD. SAFETY BELT REMAINED SECURED KEEPING CHILD IN SEATING POSITION.CSS INFORMATIOIN: MODEL NO. AND MANUFACTURING DATE INFORMATION WAS BLANK AT THE DESIGNATED LOCATION. ADVISED CONSUMER TO CONTACT MANUFACTURER TO OBTAIN AND ADD INFOFMATION TO EVOQ. *AK