well i just iting the code
30D (a)
(a)Allowance of credit
There shall be allowed as a credit against the tax imposed by this chapter for the taxable year an amount equal to the sum of the credit amounts determined under subsection (b) with respect to each new clean vehicle placed in service by the taxpayer during the taxable year.
and then there's 30D (f)
(f)Special rules
(1)Basis reduction
For purposes of this subtitle, the basis of any property for which a credit is allowable under subsection (a) shall be reduced by the amount of such credit so allowed (determined without regard to subsection (c)).
(2)No double benefit
The amount of any deduction or other credit allowable under this chapter for a vehicle for which a credit is allowable under subsection (a) shall be reduced by the amount of credit allowed under such subsection for such vehicle (determined without regard to subsection (c))
maybe i'm missing someyhing/.
