TL*THE CONTACT OWNS A 2007 FORD EDGE. WHILE STOPPED ON THE INTERSTATE, THE CONTACT'S VEHICLE WAS REAR ENDED BY ANOTHER VEHICLE TRAVELING BETWEEN 30 AND 50 MPH. THE DRIVER WAS INJURED BECAUSE THE DRIVER'S SEAT DETACHED FROM THE TRACK AND PUSHED THE CONTACT INTO THE STEERING WHEEL. A POLICE REPORT WAS FILED. THE CURRENT MILEAGE WAS 4,500 AND FAILURE MILEAGE WAS 4,300.