N.J. Stat. § 39:3-27.2
Whenever, in connection with any convention, conference, meeting, pageant, parade, celebration or similar function held in this State, a manufacturer or dealer desires to make passenger automobiles available for such function, the said manufacturer or dealer may request the director, in writing, to issue special registrations for such vehicles. The director may, in his discretion, issue such special registrations and prescribe the form and contents thereof. A fee of $1.00 shall be charged and paid for each such special registration. Such special registrations shall be valid for the term specified therein, by the director, which term shall be for the duration of the function plus a number of days, not exceeding 10 days in all, preceding or following the commencement and termination of the function, or either, or both. Upon request of the applicant for any such special registration the director may, in his discretion, issue special license plates to accompany each such special registration upon the payment to him in addition to said fee of $1.00 an amount equal to the estimated actual cost to the division of manufacturing and handling such special license plates. The design, form and contents of each such special license plate shall be prescribed by the director.
N.J.S. § 39:3-27.2