What timing! Yesterday an antique dealer told me his hobby was old trailers, and he showed me many old photos (before Airstream). One, which he has, is very thin in front to wide in the middle, then thin in back. Pictures of it new looks like a new design- very streamlined: something I would have thought was about 10 years old. But it was being towed by about a 1934 car. I did not think about that.
He is restoring his and showed me a photo. All stripped. Pre-restore.
"Neat! How old is it?" I asked.
"1936"
Early eco-modding