I think figuring out where it came from would require your first asking yourself whether you felt good about what you did in the dream, or whether you felt horrible about it.
I only know about my own dreams (and I'm not trying to turn this into "about me"; it's just that it's what I'm using as a frame of reference). My own dreams aren't even difficult to figure out. There was one set of dreams that followed my losing my mother that took months for me to figure out, because they were all different but there was a pattern. What I figured out was that with that situation (losing my mother), I had so many "issues" to deal with, my dreams essentially dealt with each one, layer by layer; with the least "buried" of issues being "addressed" in dreams first, and as each was dealt with the next-layer-down was addressed.
Under normal circumstances, my dreams are a matter of some (sometimes insignificant) thing I've encountered, though about, etc. in recent days but that made me think just a little about it. For example, if I had the dream you described it might come from something like my seeing someone on TV who did those things and my thinking, "OMG, I'd hate moving away from my family." Maybe the TV people didn't have the RV but just moved. I may have run into an old RV some other way., and my dream would put the two things together.
Sometimes my dreams are simple and without any obvious "issues" behind the images that come from what I've been exposed to. Sometimes, though, I can tell that the dreams are a matter of my brain attaching recent images that have had impact on me in real life to feelings I have. For example, if I'd spent years feeling as if I had grown distant from my family; that, and seeing something on TV or anywhere else that made me think (even for a second), "Oh, I'd hate that," could be enough to make a dream for me.
Anyway, I think you may want to try asking how what went on in the dream made you feel. Then ask if you feel that way about something (or things) in your real life. That might lead you to ask more questions of yourself and to understanding where the dream came from. Also, worries (both "back-of-the-mind" and "front-of-the-mind" worries) can be at the root of dreams. If you've thought about something like how awful it would be for you to leave your family/home, being aware of that could trigger a "dream issue".