The Excalibur automobile was a car styled after the 1928 Mercedes-Benz SSK by Brooks Stevens for Studebaker. Stevens subsequently formed a company to manufacture and market the cars, which were a standard Studebaker car with special bodywork (and soon got an upgraded engine as well). A prototype premiered at car shows in 1963, fitted on a Studebaker Lark Convertable chassis and using a 290-brake-horsepower (290 PS; 220 kW) Studebaker 289 V-8. Studebaker ceased engine production in December 1963 and consolidating all manufacturing to its Hamilton, Ontario plant, ending the availability of that engine. (Source: Wikipedia.org, CC BY-SA)