Now that the movie is out on DVD/Bluray this is the making of from 2 of the shots i worked on with DuMonde VFX in New Orleans for 21 Jump Street, the movie remake of the 80s tv show :)
Initial RnD involved deforming of the car as well. For the actual shots II got animation delivered. FumeFX for various elements like the main explosion, dedicated window fire, secondary ground fire, etc. Procedural and hand painted burn maps and vanilla PFlow for window and secondary fire. Rendered in VRay.
This was done in a month on and off, probably more around 2 weeks real work time.
A quick test advecing bubbles with a Fume Sim. The emission size of the bubbles are driven by the temperature and then advected by the smoke velocity. In the tests I used Frost Zhu/Bridson and Metaballs to mesh the large bubbles and added a displacement on top. Rendered in V-Ray with a simple refracted material and HDRmap.
I have included a sample scene below:-