The advert + some details here
http://www.visit4info.com/advert/Ford-Focus-Or chestra-Ford-Focus-Range/55796
An article about creating the instruments + interviews with the composer and the inventor (although I haven't managed to run the video)
http://www.telegraph.co.uk/arts/main.jhtml?xml =/arts/2008/03/15/bmcarpart115.xml
The music is supposed to be an original piece composed by Craig Richey - an American film music composer - but it seems to have been influenced by Danse Macabre by Saint Saens