I'm another with a Dad who built one. As a family of 6, then 5 when my older sister decided that camping with us young'uns was unbecoming, we started out in a VW Bus with tents, good enough for two trips out west, Mexico, and Canada. Then in 1968, Dad bought a brand new 20' Chevy step-van, bright red, and built an RV into it - dinette/beds, couch/beds, Coleman kitchen in back, PortaPotti, closets, a fresh water tank slung underneath, etc. It made a couple trips out west, down in to Mexico a few times, Florida, and all over. But it was a lot of work, and truthfully was a bit cramped for two adults and three or even two kids. By the time it was retired, I was out of the nest too. Mom and Dad ended up with a 30-something foot Class A around 1980 after they had moved to Florida, and they used that to ferry friends from Europe all over the US in the early 80s'. The Chevy lived on, passed down to my nephews, and last I heard it was parked in a field in Vermont somewhere.
And yes, even with a big rooftop Coleman AC it was alway hotter than heck inside.
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