Just came upon this thread. Wow...this is indeed Princess travel.
We had a VW van in the '60s. The back seat folded down into a double bed. Large dog slept on the floor.
There was an attachable hammock over the front seats for our son. A fridge. Can't remember a freezer. Pull up table, room for 4.
I'm not sure this counts.... But it had over 250 thousand miles on it when we said goodbye.