Wow. I just read all 31 pages of posts. I have been traveling in my 4runner. Sleeping in the back and cooking outside. When bad weather hits, it's less than ideal. A few years ago I built a teardrop trailer. We have put about 20,000 miles on it. It does have limitations. Space and dragging it down trails (I prefer to boondock). I have been looking at rehab'ing a sportsman 8 that I could get cheap (to go on my pickup). Or after reading this, search for a FWC. I found a couple local but I'm out of town so they will have to wait. I want to gut one and build to suit my needs. You truly have me jazzed.
By the way, we bought an engel a few years ago (traveling with prescription drugs that had to stay ~37 degrees at all times). Some of the best money spent. We love it. So much better than a cooler with ice sloshing around.