Here are a few somewhat unique videos showing some homemade side by side tandem tadpole trikes as this family travels along on them.
And here is a video showing the assembly of the adult trike.
Here are the two boys riding along on their side by side tandem trike.
Here is a short video showing some of the detail of the kids’ trike.
And if you enjoy watching these videos HERE is a link to all the other YouTube videos by this person.