As used in this chapter:
1. “Public officer” means a person elected or appointed to a position which:
(a) Is established by the Constitution or a statute of this State, or by a charter or ordinance of a political subdivision of this State; and
(b) Involves the continuous exercise, as part of the regular and permanent administration of the government, of a public power, trust or duty.
2. “Special use vehicle” means any vehicle designed or used for the transportation of persons or property off paved highways.