These are my personal views...... first of all, it was a combination of car design and barrier design which created this unusual accident. it was noticable that the nose of the car went through the barrier at its weakest point...the horizontal "joint" between first and second tier of the armco. so, the nose is at a height where it can cause armco to fold up and down, something that armco is not designed to do. so really, if armco is to be used , it should be produced in 1 m deep panels which then has no weak point. but the accident shows that the strength of the nose cone is undisputed. secondly, when the front of the car came to its sudden halt, the residual lateral g force due to weight of pu, caused the 4/6 bolts joining the pu to the monocoque, to shear. whether it was the actual bolts that sheared, or failure of the carbon fibre monocoque, remains to be seen
as an interim measure, and if the armco is not replaced a further layer of armco should be affixed on the outside to cover the horizontal joint. that would prevent a similar car intrusion
of course, nobody can have a definitive answer until after the investigation, but those are jut my thoughts....right or wrong !