(a) Any person operating a motor vehicle on the highways of this state who for the first time imports liquefied gas special fuels into the state in the supply tank of a motor vehicle but who has not obtained a liquefied gas special fuels user's permit from this state or who is not a bonded liquefied gas special fuels supplier in this state shall nevertheless be deemed a liquefied gas special fuels user.
(b) For the purposes of determining the number of gallons of liquefied gas special fuels consumed in operating on the highways of this state, the liquefied gas special fuels user shall be required to pay to the Director of the Department of Finance and Administration the tax levied by this subchapter on each gallon of liquefied gas special fuels contained in the supply tank of the motor vehicle at the time of entry into the state and upon all liquefied gas special fuels used in this state upon which the tax levied in this subchapter has not been paid.