Good old Japan. A reader sent me a link to this video dating to 2012, and though it took me a little time, I came to the conclusion that it's legitimate and not a joke.
This company, Suidobashi Heavy Industry, is apparently selling a mecha, called a Kuratas, armed with BB miniguns and some sort of water bottle rocket thingy.
I have no idea what you're supposed to do with this thing. Drive it to a party? Use it to play Airsoft? It costs 1.3 million dollars, so who has money for this sort of toy?