Jordan Flom is a content creator and, more importantly, father of triplet babies. He has been working on a logistical challenge: moving all three babies at the same time. He's worked with various workarounds, such as Home Depot lumber carts.
But his ultimate solution is a wooden frame that locks into the handles of the three strollers. The front one articulates, thus providing tight steering for this Voltron-like rig. Not shown in this video is Flom's toddler daughter, who is presumably necessary before the team can form Blazing Sword.
Note: the video appears to be staged, as the context of Flom's other videos indicates.
-via Laughing Squid