I've een told by the BBC just now that composer Craig Richey will appear on BBC Breakfast TV this morning, maybe between 8.30-9.00am to demonstrate that the music was played by these car-part instruments
Actually it wasn't Craig Richey, but someone named Bill Milbrodt who was on the breakfast show. He was clearly more 'hands on' than Richey might have been. Some instruments like the 'flute' are 100% auto-parts, other he admits are hybrids like the string instruments which are fitted with real strings and bridges, and some wind instruments need proper reed mouthpieces fitted.
OK, it's a gimmick to sell Ford cars (Milbrodt managed to mention 'Ford' during the interview but the BBC interviewers didn't), but anything that makes interest out of music is good, eh? particularly as there isn't an emphasis on percussion like those other projects featured in the Youtubes linked on this thread.
Richey composed the music but Milbrodt assembled a team of about 22 people to design and construct the instruments. The music for the Ford video was performed by Milbrodt's ensemble, called "The Car Music Project", which he had already formed in 2005 with regular members/sidemen, for the purpose of performing on a regular basis.
http://en.wikipedia.org/wiki/Bill_Milbrodt.