Apologies if this video has been posted before.
Months before Pearl Harbour, with the war in Europe escalating, Henry Ford was determined that he could mass produce bombers just as he had cars. He built the Willow Run assembly plant (the world's largest building under one roof) and proved it.
One B-24 came off the assembly line every 55 minutes!
Willow Run airplane plant
411A
There are only two B-24's that are still airworthy, and one was flying over my house...yesterday.
The Confederate Air Force (or whatever it's called now) has one. They used to offer ½ hour rides at a reasonable cost. I don't know if they still do.
FL