The subculture of people living this way is quite large, they have periodic meet ups each year in Arizona and Georgia to share ideas, strategies, good locations and meet new people. Sort of like nomadic HGs in prehistoric times.
Far as tools go, usually they carry quite a few,, many are itinerant construction workers.
Here's a nostalgic video from when I ran my food truck in the parking lot of my old apt.
Many more still up on the Diner Utube Channel.
.
RE