The present invention relates to the field of pain management, and more particularly to synergistic codrugs comprising an opioid and ketamine or norketamine which have been combined to form a single chemical codrug entity. A second dopant implantation is in the exposed the sourcedrain junctions. In response to determining that proper connections have not been made, an error or warning signal may be generated. The discharge lamp comprises means for maintaining an electric discharge in the discharge vessel. If the desired vehicle is in transit, then a central database provides information about vehicles using a Global Positioning System and RFID system on a transport truck.