Houdini + Octane + Fusion
RBD Sim for car destruction and bending
Vellum for airbags
Mixture of RBD and Crowd sim for the driver (because it is very easy to get some automatic constraints with crowd)
Pyro Sparse for the volumes with 35 million voxels
792 instanced particles
Car model is a free model from 3dexport.com
The test driver models are from mixamo.com
Background models are from polyhaven.com
EuroNcap Style Slow Motion Car Crash