Drago Beres

If the cars are from made from glass, I would expect that they crash in a thousand pieces

Its looks fine, just some points. If the fighter jet fire a missile, you don't have such flash and the trail have more lighten colour, more white. And more white as a white you get if you darken a sky little bit. Also on the impact you have more dust and les flame (except you hit a oil tank). Even napalm produce more smoke as flame, such you can see. The objects that fly around have almost no weight, like a leaf from the trees and have no motion blur. Good for study realistic things are a youtube clips from some war, actually Iraq, and they are a lot and 100% realistic.
Good plugins for max are fume and other stuff from sitni sati, also krakatoa for simulating explosions, flame and smoke and dust, or even trapcode particular for AFX

Great work, just missing some contrast colours