In the meantime, the hot season passed. I wasn't as worried about keeping the Rolling Steel Tent cool. But I occasionally used the reflective shade for privacy.
Then, as I was wandering through an RV supply store, I saw the vinyl wrap-around window covers.
"Oh yeah, those. Do they make them for Chevy vans?"
Yes, they did. And for only $38.
All wrapped for bedtime
1. Would it be a struggle to put in place alone?
No, it was simple. Hook the corner of a side piece over the edge of the door, let the magnet attach to the door, then walk the rest of the cover around the front of the van and attach it to the other door. Put the wipers over the bottom edge.
2. Would it fit decently?
Not like a custom tailored suit, but well enough. It does provide total privacy (except from those with X-ray vision).
Yes. It even comes with a storage pouch.
4. Will it keep things cooler?
I'll need to wait for summer to find out.
In the meantime, I get to feel superior to other van dwellers, poor sniveling mortals that they are. Neener neener neener.