Subsets

Full-time nomads are a subset of the general population. Full-time nomads who go to the Rubber Tramp Rendezvous are a subset of that subset. Full-time nomads who go to the RTR and camp according to vehicle type are a subset of a subset of a subset. A Venn diagram of that would look something like a target.

Here's a group of people with modified step vans.

And here are some people with the same model of Ram ProMaster-based Winnebago.