Wyo. Stat. § 31-18-204 (2026)

(a) The provisions of W.S. 31-18-203 through 31-18-208 do
not apply to mobile machinery:

          (i) Owned by the United States, the state of Wyoming
or any political subdivision thereof;

         (ii)     Which is an implement of husbandry;

          (iii)   Currently registered under W.S. 31-2-201 or
31-18-201;

          (iv) Being transported from a point outside this
state through this state or for delivery or repair in this
state;

          (v) Held for sale by a person engaged in the business
of selling mobile machinery;

          (vi) Used in the extraction or production of
bentonite, coal, trona or uranium and owned by the producer;

         (vii)    Used exclusively for the drilling of wells;

          (viii) Brought into the state for a period not to
exceed seven (7) calendar days to demonstrate the operation of
the mobile machinery to prospective buyers.