Source: US. Bureau of Economic Analysis
Autos are all passenger cars, including station wagons. Domestic sales are all United States (U.S.) sales of vehicles assembled in the U.S., Canada, and Mexico.
US. Bureau of Economic Analysis, Motor Vehicle Retail Sales: Domestic Autos [DAUTOSA], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/DAUTOSA, July 27, 2016.