the car reversed a final time , skidded around in a half-circle , and accelerated , roaring over the bleeding bundle in the street again and going down the drive , the blast of its engine , still winding up to full rev , rocketing off the walls of the sleeping buildings - but not entirely sleeping now ; lights were beginning to flick on , people who lived over their stores were going to their windows to see what all the racket had been about , and if there had been an accident .