For 'some reason', reading the recent run of posts, the 'parable' of the Spruce Goose sprang to mind.
Hughes H-4 Hercules, better known as the Spruce Goose and also the Grey Goose, was the world's largest plane. It was a massive undertaking, hugely engineered, the largest wooden plane ever made. It was built for a war that was already over by the time it arrived, and never found its place thereafter. It also only flew once, and then at only very low alititude and for only 26 seconds.
An interesting part of the story is that the aircraft took so long to design and build thanks to Howard Hughes’ perfectionism that the project's instigator and 'co-author' (shipbuilder Henry J. Kaiser) dropped out.
Ah! Summer grasses!
All that remains
Of young warriors’ dreams