California Code, Vehicle Code - VEH § 38088

(a) Upon payment of the fee specified in Section 38232, the department shall issue to the owner of a motorcycle, which the owner has certified as being used exclusively in racing events on a closed course, a special transportation identification device for the purpose of identifying the motorcycle while it is being transported upon a highway to and from racing events on a closed course. Such device may be either a plate or a sticker, whichever is determined by the department to be the most appropriate.

(b) Such device is nonrenewable, nontransferrable, and becomes invalid when the vehicle for which it was issued is sold or dismantled.

(c) A certificate of ownership may not be issued in conjunction with a special transportation identification device.