The Junkers F 13 was the first modern commercial aircraft. Outstanding design features make it an key example of an entire generation of commercial aircraft:
The cabin for the passengers is closed, accommodates four persons, and is equipped with comfortable upholstered seats, heating and illumination. Following the precedent of spacious automobiles used for long-distance journeys in those days, Junkers also referred to his F 13 as an air limousine.
