I mentioned a land speed design:
This would be a formless construction. A flat sheet cut into a 'peel pattern' with tabbed darts. This folds into a convex shape. With edges and flats, the sharp angles are at the front and back but flat at the separation point. Else the darts could be butt-welded and the whole thing planished in an English wheel for a true compound curve.
Did I mention formless? I should probably have an example in CAD (cardboard aided design).
The enclosed wheel version is motor home sized:
