We've enjoyed many a Grind Hard Plumbing Co video around these parts, for any number of reasons. Lots of people have crazy visions (some of which may even be vehicular) in their heads, but not everyone has the requisite combination of tools, skills, and wherewithal to make them come to life. GHPC, though, seems to be able to actualize those visions more often than not.
Did the world need a monster chopper? Maybe not, but did you want to see it? It seems like a whole lot of us did. By a similar token, does the world need a kart that's actually made out of two entire dirt bikes? I mean, if you think the world needs more creative joy generated by humans, then yes, maybe we do.