FreeCAD: How to get from Populated Polar Array to something I can sweep or loft

I’m building a curved/banked length of Hot Wheels track in FreeCAD. I used the Lattice2 plugin to place my sketches along the curve via a PolarArray.

I Populated the Polar array, and I’ve got a nice series of objects with varying degrees of banking correctly aligned along my curve. However, I am completely lost trying to turn this into a solid body.

I’m fairly new to FreeCAD and got this far with the AI. But it hasn’t been able to help me at this point.

Maybe there is an easier way. But using the Lattice plugin got me copies of my original sketch that are oriented the right way along the curve, I hadn’t found a better way to do that.