490.502—Creditable actions.
A fleet or covered person becomes entitled to alternative fueled vehicle credits by—
(a)
Acquiring alternative fueled vehicles, including those in excluded categories under section 490.3 of this part and those exceeding 8,500 gross vehicle weight rating, in excess of the number of alternative fueled vehicles that fleet or covered person is required to acquire in a model year when acquisition requirements apply; or
(b)
Acquiring alternative fueled vehicles, including those in excluded categories under section 490.3 of this part and those exceeding 8,500 gross vehicle weight rating, in model years before the model year when that fleet or covered person is first required to acquire alternative fueled vehicles.
(c)
For purposes of this subpart, a fleet or covered person that acquired a motor vehicle on or after October 24, 1992, and converted it to an alternative fueled vehicle before April 15, 1996, shall be entitled to a credit for that vehicle notwithstanding the time limit on conversions established by sections 490.202(a)(3) and 490.305(a)(3) of this part.