That's a great question. Whenever I look at old footage like this...
https://archive.org/details/Httpsar...eet_VisuallyLossless-Plus-Screener-Quality-HD
...my first thought is inevitably, "What were they thinking about?" I remember my first viewing of Star Trek at age 11. It was
a lot to take in, so at first I defensively said
"this is dumb" After the episode finished however I was hooked for life.
I suspect at least several people would have reacted the same way to seeing the 11 footer with statements like
"that's weird" or
"what the hell is that thing?" Anything unique or ahead of its time usually garners a negative response at first because the person doesn't understand what they are looking at which frustrates them or makes them feel silly for not understanding.
Some would have smiled and shaken their heads thinking
"Ahhh Hollywood, there you go again" or may have looked at it with wonder thinking
"I love living in this town!" "Where else would you see a giant space ship on the sidewalk?"
Perhaps some people, not familiar with Science Fiction, may have thought it was some sort of giant machine part.
It is a very odd shape when you view it objectively.
This fascination I have with the past is what motivated me to restore the picture(s) in the first place.
What do you think they would have thought?

Spockboy