WOW! Your Liebherr is great. I think your way to steering in articulated vehicles is very realistic but if there are two racks at the other sides it could be more. http://www.brickshelf.com/gallery/M-longer...rr-L-580/11.jpg this is my favorite photo-it looks like real. And pictures with Iveco-it's amazing to have two brilliant MOCs at the same time.
PS: Why don't your post it on KMFL? My English is not very good so i would prefer to say it in Polsh