Abstract: An automobile body is provided that has a front windshield, a rear window and a pair of side panels cooperatively defining a passenger compartment with a roof opening. A transparent roof panel having an area corresponding to that of the roof opening is mounted for generally translatory movement from a normal position in which it covers the roof opening to a retracted position in which the roof opening is uncovered. When the transparent roof panel is in its retracted position it lies either above or below the rear window so that a person seated in the passenger compartment can view in a rearward direction through both the rear window and the transparent roof panel.