A regular cab has a single row of seats and a single set of doors, one on each side. Extended or super cab pickups add an extra space behind the main seat, sometimes including small seats. The first extended cab truck in the U.S. was called the Club Cab and introduced by Chrysler in 1973 on Dodge trucks. A crew cab, or double cab, seats five or six and has two full-size front-hinged doors on both sides. The first crew cab truck in the U.S. was made by International Harvester in 1957 and was later followed by Dodge in 1963, Ford in 1965 and Chevrolet in 1973.

When was the first extended cab truck made? Okie... think carefully first, then make a decision:
To answer the question, consider the following: The first extended cab truck in the U.S. was called the Club Cab and introduced by Chrysler in 1973 on Dodge trucks. So, the answer is 1973.