The use of the "Datsun" name in the American market derives from the name Nissan used for its production cars. In fact, the cars produced by Nissan already used the Datsun brand name, a successful brand in Japan since 1932, long before World War II. Before the entry into the American market in 1958, Nissan did not produce cars under the Nissan brand name, but only trucks. Their in-house-designed cars were always branded as "Datsuns". Hence, for Nissan executives it would be only natural to use such a successful name when exporting models to the United States. Only in the 1960s did Datsun begin to brand some automobile models as "Nissans", like the Patrol and a small test batch of about 100 Cedric luxury sedans, and then not again until the 1980s. The Japanese market Z-car (sold as the Fairlady Z) also had Nissan badging. In the United States, the Nissan branch was named ""Nissan Motor Corporation in U.S.A."", and chartered on September 28, 1960, in California, but the small cars the firm exported to America were still named Datsun.