(a) Notwithstanding Section 8651, the excise tax imposed upon ethanol or methanol containing not more than 15 percent gasoline or diesel fuels shall be one-half the rate prescribed by Section 8651 for each gallon of fuel used.
(b) All references in this code to Section 8651 shall be deemed, with respect to the rate imposed upon ethanol or methanol, to also refer to this section.