; and (2) by adding at the end the following: (5) Notwithstanding subsections (a) and (b) of section 330, the Administrator may— (A) limit the emission of any greenhouse gas (as defined in section 9901 of the Internal Revenue Code of 1986) on the basis of the emission’s greenhouse gas effects (as defined in section 9901 of the Internal Revenue Code of 1986) from any class or classes of new motor vehicles or new motor vehicle engines subject to regulation under subsection (a)(1)