If you want to be the envy of your construction office, just show up with this masterpiece!  It is a 1:23.5 scale model of the Liebherr LTM 1750-9.1 mobile crane made out of LEGO bricks, and it's not just for show either.  It's fully drive-able and controllable with a cab that swings into position, outriggers, and a telescoping boom.