Built for the 1933 World's Fair in Chicago, the "Aerodynamic Coupe" was the first in a line of Cadillac show cars. The 154-inch (392 cm) wheelbase car featured a sloping tail section that suggested speed, power and smoothness, and presaged the "fastback" styling of the 1940s. The spare was concealed in the trunk, unlike nearly all the other cars of its time. Styled exhaust pipes represented an innovative design touch, and were engineered to deliver a pleasing exhaust note. The show car was powered by the world's first V16 engine for passenger-car use, introduced by Cadillac in 1930.

source: www.welovecadillacs.com