Bill:
I have heard people say that it's amusing to include multiple duck-ers in a consist and then watch them all go. Your video is really, really nice evidence that it's true.
The tinplate train weenie in me also appreciates that you're ducking both the mechanical-action cars (giraffe, elephant) and the electromechanical-action cars (3424 Wabash, etc.).
That idea is as good as done on my layout. Kids and adults alike can giggle over something like that. Thanks for sharing.
Steven J. Serenska