Spot, Boston Dynamics' first commercial robot, was first shown to the world in 2016 — but that didn't stop Hyundai from showing it off at CES six years later. It seems to be finding success in a few niche roles: as an inspection robot, and in some bomb disposal squads.

It's now actually not that unusual to see quadruped robots that have powered wheels for feet, allowing them to either walk or roll as the situation dictates. The modular D1 is different, though, in that it can also operate as either one quadruped or two ...