" the body panels were made of hemp fiber and resin."
Sorry - Jack got it wrong.
I went to the Henry Ford Archives and looked at the files themselves.
George Overley actually talks about the mistake others made about Hemp plastic in that car. Dr Overley said that any of 7 oil pants COULD be used, but that they used Soy. It is in a Mechanical Engineering mag in 1952.
The plants I can remember on his list are:
I have the book somewhere....
sorry I can't remember the ones Dr Overley talked about.
Henry Ford the great had 24,000 acres of Soy all around his
estate in Ypsilanti, Michigan. His airport was called "Willow Run."
They invented the Soy margarine there, among all the other inventions.