What is this thing?

I finished this beast last month, in time for an art show in Nashville (thank you, Kim, Hal, John and Wendy!). I call it the schizophrenic guitar. The headstock looks like a classical; it has a heavily arched top (though it's flat), with a great big X-brace. There's a tailpiece and a floating bridge. The fingerboard extension is cantilevered, and it's got a fingerrest. But, the strings are steel and the sound hole is round, just like an ordinary flattop.

I wanted to make a tailpiece instrument with as much sustain as I could, so there's "flying buttress bracing," carbon fiber tubing running inside the box from the top of the neck block (both sides) to the back at the waist. Same thing for the tail block. I left the back thick, so this box is stiff stiff stiff!. It's a quiet instrument, but it does sustain nicely with a sweet tone, not terribly dissimilar to that of a pin-bridge flattop, but a tad more chop in the attack. And it's little -- 18" body, 13.5" lower bout, 24.9" scale, 13th fret body join.

Why did I build such an odd box? I am trying to figure that out.