The commissioner is hereby authorized to grant, in his discretion, special permits to a new motor vehicle dealer for use on new motor vehicles driven under their own power from the factory or distributing place of a manufacturer, or other dealer, to a place of business of such dealer, or from such place of business to a place of business of another such dealer. Each special permit shall be good only for one trip, and such permit shall not be used by any such dealer in lieu of any registration card or plate required by this chapter.
