To amend the Internal Revenue Code of 1986 to increase the credit amount for new qualified alternative fuel motor vehicles weighing more than 26,000 pounds and to increase the credit for certain alternative fuel vehicle refueling properties, and for other purposes.

SECTION 1. SHORT TITLE.

    This Act may be cited as the ``Cleaner Trucks for America Act of 
2008''.

SEC. 2. INCREASE IN ALTERNATIVE MOTOR VEHICLE CREDIT AMOUNT FOR NEW 
              QUALIFIED ALTERNATIVE FUEL MOTOR VEHICLES WEIGHING MORE 
              THAN 26,000 POUNDS.

    (a) In General.--Subparagraph (D) of section 30B(e)(3) of the 
Internal Revenue Code of 1986 is amended by striking ``$40,000'' and 
inserting ``$80,000''.
    (b) Effective Date.--The amendment made by subsection (a) shall 
apply to property placed in service after the date of the enactment of 
this Act.

SEC. 3. INCREASE IN CREDIT FOR CERTAIN ALTERNATIVE FUEL VEHICLE 
              REFUELING PROPERTIES.

    (a) In General.--Subsection (b) of section 30C of the Internal 
Revenue Code of 1986 is amended by striking paragraphs (1) and (2) and 
inserting the following:
            ``(1) except as provided in paragraph (2), $30,000 in the 
        case of a property of a character subject to an allowance for 
        depreciation,
            ``(2) in the case of a compressed natural gas, liquefied 
        natural gas, or liquefied petroleum gas property the aggregate 
        cost of which exceeds $100,000, the lesser of--
                    ``(A) 30 percent of such cost, or
                    ``(B) $250,000, and
            ``(3) $1,000 in any other case.''.
    (b) Effective Date.--The amendment made by subsection (a) shall 
apply to property placed in service after the date of the enactment of 
this Act.

SEC. 4. ALLOWANCE OF CREDITS AGAINST REGULAR AND MINIMUM TAX.

    (a) Business Credits.--Subparagraph (B) of section 38(c)(4) of the 
Internal Revenue Code of 1986 is amended by striking ``and'' at the end 
of clauses (iv) and (v), by striking the period at the end of clause 
(vi) and inserting a comma, and by inserting after clause (vi) the 
following new clauses:
                            ``(vii) the portion of the credit 
                        determined under section 30B which is 
                        attributable to the application of subsection 
                        (e)(3)(D) thereof, and
                            ``(viii) the portion of the credit 
                        determined under section 30C which is 
                        attributable to compressed natural gas, 
                        liquefied natural gas, or liquefied petroleum 
                        gas property.''.
    (b) Personal Credits.--
            (1) New qualified alternative fuel motor vehicles weighing 
        more than 26,000 pounds.--Subsection (g) of section 30B of such 
        Code is amended by adding at the end the following new 
        paragraph:
            ``(3) Special rule relating to certain new qualified 
        alternative fuel motor vehicles.--In the case of the portion of 
        the credit determined under subsection (a) which is 
        attributable to the application of subsection (e)(3)(D)--
                    ``(A) paragraph (2) shall (after the application of 
                paragraph (1)) be applied separately with respect to 
                such portion, and
                    ``(B) in lieu of the limitation determined under 
                paragraph (2), such limitation shall not exceed the 
                excess (if any) of--
                            ``(i) the sum of the regular tax liability 
                        (as defined in section 26(b)) plus the 
                        tentative minimum tax for the taxable year, 
                        reduced by
                            ``(ii) the sum of the credits allowable 
                        under subpart A and sections 27 and 30.''.
            (2) Alternative fuel vehicle refueling properties.--
        Subsection (d) of section 30C of such Code is amended by adding 
        at the end the following new paragraph:
            ``(3) Special rule relating to certain alternative fuel 
        vehicle refueling properties.--In the case of the portion of 
        the credit determined under subsection (a) which is 
        attributable to compressed natural gas, liquefied natural gas, 
        or liquefied petroleum gas property--
                    ``(A) paragraph (2) shall (after the application of 
                paragraph (1)) be applied separately with respect to 
                such portion, and
                    ``(B) in lieu of the limitation determined under 
                paragraph (2), such limitation shall not exceed the 
                excess (if any) of--
                            ``(i) the sum of the regular tax liability 
                        (as defined in section 26(b)) plus the 
                        tentative minimum tax for the taxable year, 
                        reduced by
                            ``(ii) the sum of the credits allowable 
                        under subpart A and sections 27, 30, and the 
                        portion of the credit determined under section 
                        30B which is attributable to the application of 
                        subsection (e)(3)(D) thereof.''.
    (c) Effective Date.--The amendments made by this section shall 
apply to taxable years ending after the date of the enactment of this 
Act.

Summary: Cleaner Trucks for America Act of 2008 - Amends the Internal Revenue Code to: (1) increase the credit amount for new qualified alternative fuel motor vehicles with gross vehicle weight ratings of more than 26,000 pounds from $40,000 to $80,000. (2) allow an increased tax credit for alternative fuel vehicle refueling properties that dispense compressed natural gas, liquefied natural gas, or liquefied petroleum gas. And (3) allow such credit amounts against the regular and alternative minimum tax.