Yes very cool...... you can watch behind the scenes here...shot on RED, you can see the steadicam on harmounted on a camera truck for the chase sequence and operating in the red square.
I think the first shot of the hallway arches is dolly then steadicam....if not this guy kicks ass.
http://www.slashfilm.com/2010/05/27/exclusive-making-of-carl-erik-rinschs-the-gift/
here is the short letterboxed wihtout the phillips bs....
Thank you for the link without that annoying frame.