When I was 3 or 4, I was a terrible child who swept a path of abject destruction across my neighborhood. And that was with a Big Wheel.
I can't imagine what kind of trouble my friends and neighbors would have been in had I owned one of these gas-powered junior exoskeletons. It's from Japan (of course). It's self-propelled, weighs 400 pounds, and would terrify my pets.
The Kid's Walker is controlled by the pint-size pilot, not the parent, which is a bit worrisome, but at least it's not armed with some sort of firearm, so there's that.
Sadly, it's not for sale. The company that made it, Sakakibara Kikai, will rent it out, though. Were they to sell it, That Costume Blog estimates it would cost about $21,000. Had I the money when I was a kid, I'd have been the next Iron Man. Well, Iron Toddler, anyway.