Columbia subject headings:
Automobile industry and trade--Law and legislation--United States.
Automobiles--Fuel consumption--Law and legislation--United States.
Harvard subject headings:
Automobile industry and trade--Law and legislation--United States
Automobiles--Fuel consumption--Law and legislation--United States.
Princeton subject headings:
Automobile industry and trade--Law and legislation--United States.
Automobiles--Fuel consumption--Law and legislation--United States.