Section R865-4D-1 - Utah Special Fuel Tax Regulation Pursuant to Utah Code Ann. Section 59-13- 102A. Motor vehicle means and includes every self-propelled vehicle operated or suitable for operation on the highways of the state which is designed for carrying passengers or cargo; but does not include vehicles operating on stationary rails or tracks, or implements of husbandry not operating on the highways.B. User means any person using special fuel for the propulsion of a motor vehicle on the highways of the state, including: 1. interstate operators of trucks and buses,2. intrastate operators of trucks and buses, and3. contractors using special fuel in self-propelled vehicles for carrying of passengers or cargo.Utah Admin. Code R865-4D-1