Hot off the opening weekend box office success of "Cars 2," Disney Pixar has unveiled the first teaser trailer for their next big film, the 2012-scheduled, "Brave."And while "Cars 2" is a fun sequel of the 2006 film, "Brave" is groundbreaking territory for the hallowed CGI studio.The film, about a Scottish warrior princess named Merida, is the first from Pixar to feature a female lead, let alone one that breaks the mold of most of Disney's beloved princesses (though Mulan was also a warrior princess).