Cars made in the United States by an American-owned cornpany are inciuded in 0nly the Gross Domestic Product
only the Gross National Product
both the Gross Domestic Product end the Gross National Product

Cars made in the United States by an American-owned company are included in Both the Gross Domestic Product and the Gross National Product.

Explanation:

A Summary. Gross domestic product (GDP) is the estimation of a country's complete domestic assets and assistance throughout a particular period. A similar but distinct metric, the gross national product (GNP), is the estimation of all complete assets and assistance recognized by a country's citizens over a period of time.