I found that on my Delorean, battery acid ate away the thread used to sew the straps to the buckles. It took a while of trying to fasten the buckles to figure out why they didn't work. In order to sew it back again, I'd have to remove it from the car since my sewing machine won't fit behind the rear seat. The straps appear to be riveted in there like they were never intended to come out. Walt Tampa, FL