Bomb truck barrier - GIF

[Ralphxyz]

What? Why? This one of the strangest stupidish things I have seen.

[Frank S]

What? Why? This one of the strangest stupidish things I have seen.

Barriers have to be real world tested before they will be approved for use.
going almost frame by frame there is no evidence there ever was a driver in the truck. At least not from as far back as you can see. A driver probably had tied the steering wheel got the truck rolling to a reasonable speed to jump out pulled the throttle on his way out the door inertia and diesel fuel would have taken care of the rest.
For a more real world test the truck should have been fully loaded. It is one thing to stop an empty truck weighing around 10 tons quite another to stop one weighing 30 tons, but had the barrier failed to stop a fully loaded truck then there is no telling what might have happened