I really liked the video. I think you did an excellent job for your first time.
In my opinion, the text would look better if it were centered aligned when it was rolling in at the intro. I'm not sure how you were pulling the first two vehicles, but it looked like I could see you pulling it with string. Next time I would try to frame it where you couldn't see it or use something like fishing line.
However, I've never done any type of animating like this so take what I have to say with a grain of salt.