Minn. Stat. § 168.092
The motor vehicle registrar may issue a permit to a person purchasing a new or used motor vehicle in this state for the purpose of allowing the purchaser a reasonable time to register the vehicle and pay fees and taxes due on the transfer. The permit is valid for a period of 21 days. The permit must be in a form as the registrar may determine, affixed to the rear of the vehicle where a license plate would normally be affixed, and plainly visible. Each permit is valid only for the vehicle for which issued.
The registrar may issue permits to licensed dealers. When issuing a permit, the dealer shall complete the permit in the manner prescribed by the department.
Minn. Stat. § 168.092
1971 c 853 s 14; 1976 c 94 s 2; 1983 c 68 s 1; 1986 c 444; 1994 c 536 s 8