In this French variation on Mark Twain's Man with a Million story, a man's life is completely changed by the acquisition of a new car. Marcel, a Chaplainesque factory worker, sets out to buy an old motorcycle and ends up getting a new Cadillac convertible (the "beautiful American" of the title) for $100.
He loses his job and suffers other misadventures, but is then amazed at how people treat him when they learn he owns the prestigious vehicle. Amusing little farce makes a few telling points about the pretensions of the very rich.