Wyo. Stat. § 31-19-104: Registration of rental vehicles.

(a) All rental vehicles shall be registered pursuant to chapter 2, article 2 of this title, subject to the exemption provisions set forth in W.S. 31-2-224(a)(x) and (xi).

(b) U-drive-it vehicles may be registered under the international registration plan pursuant to W.S. 31-18-201 through 31-18-209.

(c) A rental vehicle transaction occurs in the jurisdiction in which the rental vehicle first comes into the possession of the user. Thereafter, all rental vehicles rented by the owner and displaying valid registration in any jurisdiction may operate in Wyoming on an interstate and intrastate basis.