It was the 1940 Oldsmobile sedan. And they called it the World’s Most Modern Car. And why not! Automatic transmission was based on technology first developed in the early 1900s by German manufacturers of marine engines. However, it was not adapted for automobiles for several decades. In 1938, General Motors developed the first line of cars to sport automatic transmission -- Oldsmobiles that offered "Hydra-Matic drive." The cars were introduced to the public in 1940. In 1941, Chrysler followed suit and introduced three different cars that offered their version of automatic drive, "Vacamatic" (later called "Fluid Drive"). Automatic transmission was a fairly common option on most American cars by 1948. It provided true clutchless driving with four forward speeds. Its fluid coupling between engine and transmission eliminated the clutch and its associated foot work. Olds made the breakthrough Hydra-Matic available on all models for only an extra $57. This lovely card. A vintage one really, was sent to me by Tina from China.