Pow! With Supreme Court Rebuff, DC Comics Wins Batmobile Copyright Case (newsoxy.com)
New submitter Mr. Competence writes: The U.S. Supreme court has declined to review a ruling by the 9th Circuit Court declaring that 'the Batmobile is a character that qualifies for copyright protection.' The case involved Mark Towle, a California man who produced replicas of the Batmobile for car-collecting fans of the caped crusader; selling them for about $90,000US each. The original would cost a bit more.
You're thinking of trademarks.