Verified answer

Sia's cover - "Under The Milky Way".-

Sia covering The Church's Under The Milky Way

http://www.whatisthatsong.net/commercials/lincoln....

Under The Milky Way Tonight, covered by Sia.

You can download the song on the Lincoln website: http://www.lincoln.com/extras/tv-download.asp?vide...

Sia's cover of "Under The Milky Way"

http://www.youtube.com/watch?v=1glHf7J3qWs

could be 'under the milky way tonight' by Church

or

I've seen a lincoln car commercial recently that I recognized the song to be "major tom (coming home)" by shiny toy guns