Car models include: Viper, Interpid, Stealth, Spirit, Shadow, Neon, etc. Brothers John and Horace Dodge were shareholders and directors of Henry Ford, and their factory initially produced parts for Ford automobiles. Due to Ford's success, the Dodge brothers also benefited from it and began to develop their own company to become Ford's rival. The Dodge brothers split from Ford in 1919. Later, Dodge became the backbone of Chrysler Motor Company. Sub-brand car logo story "Dodge" text trademark adopts the surname "Dodge" of the Dodge brothers. The graphic trademark is an image of a sheep's head in a pentagon. Two trademarks, the small ram and the big ram, are used on the car. This trademark symbolizes that "Dodge" cars are strong and tough and good at dueling, and that Dodge's products are unpretentious and beautiful.