WHILE VEHICLE WAS STOPPED, A SPORT UTILITY VEHICLE TRAVELING APPROXIMATELY 35 TO 40 MPH REARENDED CONSUMER'S VEHICLE. CENTURY (MODEL: 4545NCB, DOM: 03/15/2000 CHILD SEAT WAS IN BACK SEAT OF VEHICLE WITHOUT THE CHILD. SEAT FRAME CONNECTION TO BASE FAILED AND DISCONNECTED DURING IMPACT. PLEASE PROVIDE ANY ADDITIONAL INFORMATION / ATTACHMENTS.*AK