I downloaded the photos into PowerPoint where I could enlarge the images to see more detail, and there are definitely some "rough edges and blemishes" (angle iron with exposed bolt threads and nuts, etc.) that I don't think a manufacturer trying to attract customers would have let out their shop door (or maybe that's why there is no manufacturer's name plate on it!). So, I'm still guessing it's a pretty cool DIY project. On another note, the image enlargements also let you see a bit better through the door window some details inside - including what appears to be sink cabinetry just inside the door to the left. A really curious person with the right (or wrong) connections in British Columbia could probably track down the owner from the truck's license
plate (then have fun trying to explain to the owner how they tracked them down!).