Oh, that music brings back memories.....
Anyway, my vote won't help you much, as I voted for just about all of the entries that I've seen so far.
On to the review, while being a good solid animation, it doesn't have anything that's really unique or that stands-out to me. It's got a slower pacing than most, and therefore seems to be less action-y. And while there's no problem with that as an animation, as a contest entry that may hurt. It also seems more like the characters are saying "Hey, you wanna play break-down?" "Sure, but only if we can re-build this as something else." as opposed to "Quick, we have to re-build this garbage truck into something with weapons to combat the coming apocalypse!"
But enough with the bad stuff, that's really nothing more than nit-picks. You did a great job on the detailed building clip, and I liked the ending shot a lot. Your animation is top-notch as always, and the set is nice and large, as well as detailed. I wish you the best of luck!