Love the colors on the fire and the smoke from the building as well. The blurr effect adds a ton of motion to this drawing. I think maybe easing up on the blurr just a bit on the open door of the upside down car would help solidify the piece that way you can really see some more detail.
Really love the color of that explosion. I need to figure out how to get that glow effect down. I managed to pull off a pretty neat lightning bolt, but haven't had to do any explosions just yet. Heh, I'll be hitting you up for some tips when I get to those.