Pub. L. 110-140, tit. I, subtit. A, sec. 113
EXEMPTION FROM SEPARATE CALCULATION REQUIREMENT.
SEC. 113. EXEMPTION FROM SEPARATE CALCULATION REQUIREMENT.(a) Repeal.—Paragraphs (6), (7), and (8) of section 32904(b) of title 49, United States Code, are repealed.(b) Effect of Repeal on Existing Exemptions.—Any exemption granted under section 32904(b)(6) of title 49, United States Code, prior to the date of the enactment of this Act shall remain in effect subject to its terms through model year 2013.(c) Accrual and Use of Credits.—Any manufacturer holding an exemption under section 32904(b)(6) of title 49, United States Code, prior to the date of the enactment of this Act may accrue and use credits under sections 32903 and 32905 of such title beginning with model year 2011.