answered on NoC
but, to be honest, theres another song in a different Iron Man ad (and some other movie ads.. speedracer being one of them) which i think is a whole lot better, which is Celldweller's "Birthright (Beta v1.0)" which you can download at celldweller.com
there might be the multitrack files for it too. Celldweller's second to NIN for multitrack awesomeness.