Reference using what you have, that is true however
the biggest issue I have run into in determining what vehicle to use is
ventilation. A cargo van has the absolutely easiest way to ventilate by cutting the 14x14" square hole in the roof for the F Fan/Maxxair. Nothing else works as well that I have heard of.
No other type of vehicle (passenger van, minivan, car, SUV etc) seems to have this ability to cut into the roof so easily, without disturbing AC vents and lines or uglying up the roofline and wrecking resale. There is a minivan video on YT (an older 2000's Toyota Sienna) that someone cut in a Fantastic Fan into but it is fugly...
An ambulance, a truck camper or a truck canopy obviously does have the ability, and a true RV already does, but for cars and vans, just the cargo seems to work That's one of the biggest plusses for the cargo and the biggest drawback of the other vehicle choices for me.
I thought I had it solved by looking at a minivan or SUV with a sunroof however during rainy times that's a no go. In addition, a sunroof is usually rare on minivans and full sized passenger vans (actually non-existent on FS vans) and is not too common on FS SUV's. It also comes bundled with expensive option packages so lower end vans like the Dodge Caravan will rarely, if ever, have one.
Oh well.