; and (2) by striking of such section. and inserting of section 202, or a rule prescribed under section 206. . (c) Table of contents amendment The table of contents for the Petroleum Marketing Practices Act ( 15 U.S.C. 2801 et seq. ) is amended by inserting after the item relating to section 205 the following: Sec. 206. High-efficiency fuel and vehicle marketing requirements. . 5. Advertisement of price of high-octane automotive fuel (a) In general It shall be unlawful for any person to sell or offer for sale, at retail, automotive fuel with a research octane number (as such terms are defined in section 201 of the Petroleum Marketing Practices Act ( 15 U.S.C. 2821 )) of 95 or greater unless such person displays, in a manner specified in the rules promulgated under subsection (b), the total price per gallon of such fuel on any sign on which such person displays the price of the most-sold grade of automotive fuel of such person. (b) Rulemaking (1) In general Not later than 24 months after the date of enactment of this Act, the Federal Trade Commission shall promulgate, in accordance with section 553 of title 5, United States Code, any rules necessary for the implementation and enforcement of this section. (2) Contents Such rules— (A) shall define retail and most-sold for the purposes of this section; (B) shall specify the manner in which the price of automotive fuel with a research octane number of 95 or greater must be displayed in order to comply with subsection (a)