Abstract: A tent for use with automobiles having a rear door which opens upwardly about a horizontal hinge attached to its top edge. The tent has a prism shape including a pair of substantially parallel triangular ends joined on two sides by quadrangles with the third side being open. One side fits over the top of the open door so that the other side hangs down from the top open end of the door in a substantially horizontal plane with its lower edge joined to the rear of the vehicle adjacent its bumper. The free edges of the ends seal against the rear quarter panels of the car. The ends are secured to the vehicle by elastic straps having hooks on their free edges which clip under convenient points on the car body.