Columbia subject headings:
Harvard subject headings:
Automobiles--United States--Fuel consumption
Automobiles--United States--Safety measures.
Energy policy--United States
Petroleum conservation--United States.
United States. Department of Transportation.
Princeton subject headings:
Automobiles--United States--Fuel consumption.
Automobiles--United States--Safety measures.
Energy policy--United States.
Petroleum conservation--United States.
United States. Department of Transportation