Woah!
Straight off the bat, it's one of the most beautifully presented animations I've seen in a while. The opening scene with cityscape and sunset was jaw droppingly gorgeous!
The animation was as to be expected of you really. That is awesome, of course. The fluid combination of frame-by-frame and tween is near perfect and I love the camera angles and perspectives you use to really get the action going.
I like your choice and use of colours. Really bright and vibrant. Also the back and foregrounds are beautifully illustrated. I noticed alot were imported from different programs.
Anyway, great work and as always, I look forward to your next animation.