Download this
quicktime video and add additional explosions to the generators in the surrounding area.
You will see the practical one already in the scene. You can add any additional effects to enhance the effects if you want. The aspect ratio is the same as the footage. 640 x 480, 30 fps.
"I would start by tracking the footage and then generate several particle explosions using streaks and points. I would also model in block shapes for the cars so the particles can react to them and cast reflection on them and add additional sound effects."