The cunning plan, chaps and chapesses, is no plan. No film for a start … we’re truly out of good onesfor now, shall try some sci-fi shlock next. Meanwhile, this “ute” below. Some countries call it a pickup.

To my mind, there are two ways to go for an overnighter or even a week away vehicle. Leaving caravans aside, plus SUVs, motorhomes and large solution vehicles with all mod cons … all of which have designed for, hefty engines and underpinnings … the ute or pickup was always designed as a sort of useful car for other than domestic transport.
For it to even approach one of the designer homes on wheels, it really needs the flatbed area to have a maybe plywood foldout design, easily expandable … but that still leaves power and water to take care of.
Another way to go might be a Ford Transit or some sort of Amazon van type, set up inside … downside is the special engine, different insurance category and so on.
The reason the “ute” took off in Oz was that the intercity roads were pretty good and it required a car more than a truck to cover thousands of miles. Plus the weather was far more often hot and dry. Horses for courses. In Britain, I’d think the van would be more useful.