Alternative Vehicle Acquisition: Use Requirements (1) under 42 U.S.C. § 6374(a)(3)(A)-(D) says that agencies are to purchase, to the maximum extend feasible, dedicated and dual-fueled vehicles and to ensure that each type of alternative fuel vehicle is used by the Federal Government.
(A) To the extent practicable, the Secretary shall acquire both dedicated and dual fueled vehicles, and shall ensure that each type of alternative fueled vehicle is used by the Federal Government.
(B) Vehicles acquired under this section shall be acquired from original equipment manufacturers. If such vehicles are not available from original equipment manufacturers, vehicles converted to use alternative fuels may be acquired if, after conversion, the original equipment manufacturer's warranty continues to apply to such vehicles, pursuant to an agreement between the original equipment manufacturer and the person performing the conversion. This subparagraph shall not apply to vehicles acquired by the United States Postal Service pursuant to a contract entered into by the United States Postal Service before October 24, 1992, and which terminates on or before December 31, 1997.
(C) Alternative fueled vehicles, other than those described in subparagraph (B), may be acquired solely for the purposes of studies under subsection (b) of this section, whether or not original equipment manufacturer warranties still apply.
(D) In deciding which types of alternative fueled vehicles to acquire in implementing this part, the Secretary shall consider as a factor—
(i) which types of vehicles yield the greatest reduction in pollutants emitted per dollar spent; and
(ii) the source of the fuel to supply the vehicles, giving preference to vehicles that operate on alternative fuels derived from domestic sources.