National Highway Corporations is an unseen car's company in NiGHTS into Dreams.
About[]
Description for Gloom of the N.H.C in the Japanese website.
National Highway Corporations never appears in the game, nor is it ever mentioned. However, the NiGHTS into Dreams Japanese website does confirms that it exists. According to the description for Mystic Forest's theme in the website, someone from the National Highway Corporations would be very worried to see all the ruined vehicles and signs in Mystic Forest.