S.D. Codified Laws § 32-6B-5.6
A person who is engaged in the business of manufacturing or customizing motor vehicles may display and offer limited demonstration of a person's customized motor vehicle at an event without a license issued under this chapter if the person meets the provisions of this section. Before displaying or demonstrating any motor vehicle, the person shall register and purchase a permit from the department. The permit does not allow the sale of any motor vehicle. The fee for the permit is five hundred dollars. However, if the permit is purchased before the start of the event, the fee is two hundred fifty dollars. The permit is valid for fifteen consecutive days. Any person found to be in violation of the provisions of this section shall be denied a permit for a period of fifteen months from the date of the violation. For the purposes of this section, the term, customized motor vehicle, means any motor vehicle that has been altered from the manufacturer's original design or has a body constructed of nonoriginal materials.
SDCL 32-6B-5.6