The SEFAC was built by Societé des Etudes et de Fabrication d'Automobile de Course. Finance was raised by the Comité de la Soupscription Nationale pour Fonds de Course The engine was designed by Emil Petit and the chassis by Edmond Vareille, both of whom had been involved with the 1920s Samson cars.
The puzzle picture shows the SEFAC as it first appeared, in practice for the 1935 French GP, but it did not start as it was seriously overweight. In 1938 it ran in the Pau GP and the French GP by which time the nose had been restyled to cowl the radiator in. In 1948 the car re-emerged as the Dommartin with a new body but never raced.
