Apparently "O.C." star Mischa Barton didn't realize that celebrities, particularly B-list ones, are subject to the same laws as us common folk. The National Enquirer reports that Barton left her car unattended outside the baggage claim area at LAX and had a conniption when she returned 10 minutes later to find her car gone. She was overheard yelling at a policeman, who smiled and calmly directed her to a nearby impound lot.