Without knowing all the details of this incident, I am not prepared to pass comment except that anyone who has ever suffered total electrical shutdown in 'Lane 3' would not leap to rapid judgment. And hi-tech modern cars certainly make it even more difficult than my experience of this, in 1981 in a mid-engined Renault 5 Turbo, as mentioned in Chapter 13 of my book, The Good, The Mad & The Ugly (not to mention Jeremy Clarkson). The Lamborghini driver may have come to a sudden stop and the van driver may have been unsighted and unable to avoid the collision.
No excuse in the eyes of the law Peter....van driver is at fault.