The Stutz IV-Porte (also called Duplex and Victoria) were sedans produced by the Stutz Motor Car of America company in the 1970s and 1980s. The Stutz Diplomatica and later Royale were limousines produced by the Stutz Motor Car of America company in the 1970s and 1980s. All these cars shared characteristic design features, such as a spare tire protruding through the trunklid and freestanding headlamps as well as a very luxurious interior, with the Stutz Blackhawk coupe designed by Virgil Exner.