Trademarks for different car models. Generally speaking, automobile trademarks can be divided into main trademarks and sub-trademarks. The main trademark is the name of the company, such as Ford, Chrysler, General Motors, Toyota, Volkswagen and Nissan, etc. They are generally derived from the surname of the founder of the company. Sub-trademarks They are the trademarks that truly represent different models, such as Mustang, Dodge, Lexus, Crown, Santana, etc. A trademark is a sign used to identify and distinguish the source of goods or services.