"Sandstorm" by Darude is the last track that you can make out. But I expect you are on about the snatch of something else on the very end of the ad. I think this is the end of a track which makes it difficult to identify.
Barber's Adagio For Strings (Ferry Corsten Remix) - with William Orbit is the last sample on the advert, does anyone know the 2nd sample right after "its time to burn"?