Computer simulations of this crash were pioneering and done by peers in the engineering consulting world [0]. I don't remember the details but I suspect the cost of those back then were on a par with the cost of the actual full-scale physical test. How things have changed.
A few years later and beyond, I got deeply involved in developing similar and new simulation algorithms and techniques for impact, explosions and safety which we and customers applied in the defence, space and other industries [1].