Curbside Outtake: Toyota Tacoma With Odd Camper

I’m not quite sure what to make of this; maybe one of you will help me out. I’ve seen a lot of homemade campers here over the years but I’ve never seen anything quite like this. Is it a purpose-built unit, or was it converted out some other thing?

This was the side I saw first, which is what made me wonder whether it was some kind of commercial thing.

The back doesn’t help much either. How do you get in the thing?

This hose also caught my attention.

I hope someone can explain it, because I’m stumped.