A plane, a train, no, it's a Ninja Crane

Based on images found in the LEGO caches, A new Ninjago Crane with a wrecking ball will be part of the 2012 set lineup for the theme. As every Spinjitsu Master knows, a crane with a wrecking ball is one of the most important weapons in a Ninja’s arsenal, right after the Samurai Sword and air superiority fighter.

Source: Toys N Bricks