Fast Paced Animation

This is a very fast past video, but does have a wide array of presentation techniques. I speculate that this could have been made to practice several techniques in one go. From sun shadows to animated people to "construction simulation" (the part that shows the beams which support the glass ceiling/skylight)... this short animation covers it. Like I said, it could have been a test to see what the particular program/s can do to achieve certain outputs. Interesting clip.