No tax shall be imposed upon any user with respect to that fuel which the user establishes to the satisfaction of the board is used in the operation of a motor vehicle off the highway.
Ca. Rev. and Tax. Code § 8653
No tax shall be imposed upon any user with respect to that fuel which the user establishes to the satisfaction of the board is used in the operation of a motor vehicle off the highway.
Ca. Rev. and Tax. Code § 8653