But, he does concede "some" and "many"

In Why Gasoline Prices Are Volatile, Jonathan H. Adler wrote:

While most of the fuel standards were adopted in the name of the environmental protection, many are actually the result of special interest pleading. Producers of various products, ethanol in particular, sought fuel content mandates or performance requirements that would benefit their particular product. (I detailed part of this history in “Clean Fuels, Dirty Air,” in Environmental Politics: Public Costs, Private Rewards (Greve & Smith eds. 1992).) Worse, some of the content requirements are irrelevant for new cars due to modern pollution control equipment. Federally imposed boutique fuel requirements have outlived whatever usefulness they ever had.