In 1914 an automobile called the DAT car was built by the Kaishinsha Motorcar Works in Japan. The name was an acronym of three partners surnames. The car was successfule and the company branched into trucks and by 1925 the company was renamed to DAT Motorcar Co. In 1931, Dat Motorcar Co. began building a new car smaller than their other DAT model in production. They named the new car the "son of Dat", or rather "Datson".
In 1934, Nissan became owners of DAT and they changed the name from "Datson" to "Datsun" to honour the sun in the national flag. In 1986, Nissan phased out the name, but relaunched it again in June 2013.