Speaking of insanity and flat-wraped sheetmetal... I wanted to try this one morphic image, just to see if it could have any reality at all.
While difficult and complex to do so, it could be conically wraped from sheet metal slices over a wooden frame.
I discovered that, using 24" diameter wheels, it could not look like that 2d image and seat more than one person solo seated, who also must, lay way-way back low.
So I also triied some reproportioning, including with 30in wheels. So stairing at the origional 2d, do you think that is a realistic presentation? It was even worse than you might guess.