The reason for it is often guessed at but I�ve never seen it backed up till now.
One of our bolters was kind enough to turn me on to the 1936 utube of the GM assembly line. Along with it are a bunch of other videos; the particular film I�m referring to describes the prewar vacuum shift feature on the cars. In one scene two women and a child get into the front seat of a sedan. The narrator points out that another new improvement has been made by taking the control levers from the floor and placing them on the dash. He says this has made more room and comfort for the driver and front seat passengers, and now since they can enter and exit the side away from traffic, more safety for all.
This would tend to give credence to the theory that the outside door locks on the trucks were installed only on the passenger side for safety reasons.
This is the vacuum shift film and this narrative is at the tail end of the film.
www.youtube.com/watch?v=GB9hgWwoP-UDenny Graham
Sandwich, IL
