The Cadillac V-16 was Cadillac’s top-of-the-line car from its January 1930 launch until production ceased in 1940 as the war in Europe killed sales. All were finished to custom order, and the car was built in very small numbers; only 4076 cars were constructed in the eleven years the model was offered. The majority of these were built in the single year of 1930, before the Great Depression really took hold. This was the first V16 powered car to reach production status in the United States.
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en.wikipedia.org/wiki/Cadillac_V16#1938-1940