when did they start putting vin numbers on cars
Vehicle identification number VINs were first used in 1954.[1] From 1954 to 1981, there was no accepted standard for these numbers, so different manufacturers used different formats.
Vehicle identification number In 1981, the National Highway Traffic Safety Administration of the United States standardized the format.[1] It required all on-road vehicles sold to contain a 17-character VIN, which does not include the letters I (i), O (o), and Q (q) (to avoid confusion with numerals 1 and 0).
Horse and buggy By the early 1910s, the number of automobiles had surpassed the number of buggies, but their use continued well into the 1920s in out of the way places.
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Catalytic converter As an alternative, catalytic converters were moved to a third of the way back from the engine, and were then placed underneath the vehicle.
Classic car Organizations such as the Classic Car Club of America (CCCA) and the Antique Automobile Club of America (AACA) maintain a list of eligible unmodified cars that are called "classic". These are described as "fine" or "distinctive" automobile, either American or foreign built, produced between 1915–1925 and 1942–1948.