The that helped drive to build beefier mills is up for grabs.

The 1934 has just been listed by M.S. Rau, with an asking price of $1.25 million. The historic ride is one of only 43 such examples in existence, according to the antiques dealer. It also comes with an incredible backstory that details its role in British automotive history.

Legend has it that Rolls-Royce purchased this particular Cadillac (ID number: 5100024) in 1934, shipping it to England to study all that lay under the hood. The British marque, which had acquired W.O. Bentley’s firm just three years earlier, was eager to start producing engines as powerful as the American multi-cylinder mills and thus wanted a better understanding of their mechanics. Bentley himself tested the sedan, traveling over 10,000 miles across Euro

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