It got me soo frustraited as to what this was that i emailed SEAT. Tonight i got a response "The 40-second advert features a specially commissioned piece of music titled Madhouse."
They contacted the sales team in spain to see about possibly releasing it further. I will let you know more as i find out.
The song is NOT Frontier Psychiatrist, it is 'Touch of Madness' by The Avalanches. It was especially comissioned for Seat and there are no plans to release it, unfortunatly (I have personally emailed Seat twice asking)