CADILLAC, CAPARO, CARVER, CASTAGNA, CATERHAM, CHAMPION, CHARRON, CHECKER, CHENARD ET WALCKER, CHEVROLET, CHRYSLER, CISITALIA, CITROEN, CLENET, CLEVER, CMEC, COBRA, COLANI, CONNAUGHT, COOPER, CORD, CORRE-LA LICORNE, COSWORTH, COTTIN-DESGOUTTES, COTTON, COVENTRY CLIMAX, COVINI