W. Va. Code § 11-15A-13
(a) Imposition of tax. --
(c) Determination of average wholesale price. --
(d) Computation of tax due from motor carriers. -- Every person who operates or causes to be operated a motor carrier in this state shall pay the tax imposed by this section on the average wholesale price of all gallons of gasoline or special fuel used in the operation of any motor carrier within this state, under the following rules:
(i) Effective date. --
This section shall have no force or effect after December 31, 2003: Provided, That tax liabilities arising for periods ending before January 1, 2004, shall be determined, paid, administered, assessed and collected as if this section had not been repealed, and the rights and duties of the taxpayer and the State of West Virginia are fully and completely preserved.