It certainly is a fine piece of engineering! Our company has a monitoring system at the Mclaren Headquarters in Working where they build them, but I've not been able to find an excuse to go there. I do visit their race engine factory quite a bit though - the place is like an operating theatre! Andrew would be very much at home there.

Here's an interesting short clip from Martin Brundle's Supercar vid shot before they really got them into production:
SLR Video (8MB)