The Van is almost a perfect vehicle for both traveling and living in. These vehicles are available in many sizes to provide for anyone's needs. Special optional features, such as fiber glass high tops, extended lengths, a wide variety of drivetrains, and other miscellaneous features make these more usable for one's owns needs & conveniences.
This thread shows dimensions of various Vans
https://vanlivingforum.com/Thread-Van-Dimensions-Sticky
The Van is quite like a light truck and suited to heaver travel and more resistant to wear.
Still it is affordable, reasonable to license and insure and used parts can be found for them
as Vans are in wide spread use. Likewise maintenance is just as common and available.
If one wants to fix one up like a Class B camper Van, they can do so with just the most basic
of amenities (bed, Kitchenette, ice chest, water jugs, house battery, and suitcases or boxes for
clothing and other essentials.
Set up in such manner, here in the States where I live, one could travel using Gymnasiums, truck stops,
camp grounds and so forth to rest overnight. In this lite travel strategy, there are plenty of bathrooms
everywhere, places to shower, clean up, change into clean clothing, and Walmart & Lowe's facilities where they will allow you to spend the night on the parking lot (in states where legal) and use the free WIFI. This also makes the acquisition of food and beverages quite easy as well as any building materials.
And there are plenty of used Vans that have been fleeted and written off for sale quite reasonable. In the States companies can depreciate vehicles to "0" in 5 years time and then sell them for a low price to get rid of them quickly.
What's not to like for a poor working Joe ?