Abstract: Apparatus for protecting the finish of an automobile from damage caused by opening doors of other automobiles against the automobile protected by the apparatus of the present invention. A shock cord is mounted at the most effective location on the side of an automobile by using clamping devices which are removably affixed to the lips of the front and rear wheel wells at locations which best mount the shock cord for protecting the automobile. The clamping device includes a cord holder which is both rotatable and slidable with respect to a clamping portion of the device in order to allow clamping at all locations on the wheel wells with a generally horizontal shock chord.