The song is Days Go By by Dirty Vegas. You can hear the song and view their own web video (not the commercial) at dirtyvegas.com
As far as I know, there is no way to save or download once you've listened to it.
Who sings that song in the new Mitsubishi commercial with the lyrics
: 'Live my life without you'? It has that girl doing the pop and lock routine in the front seat as the car is driving around. Cool song, but who is it?