Has anyone seen Death Sentence (2007 Kevin Bacon)?

In the parking garage scene, it is one continuous shot, no cuts! My question is, how in the world did they manage to cover multiple levels, inside and out? This scene is one hour before the end of the film.

JS

Hey John, check out the special features on the DVD, They explain the whole thing. its actually pretty low tech from what i remember.

They also explain how they got those fast tracking shots.

Great camera work in that film.