"upsetting machine" with a rolled thread that was stronger than any bolt we could buy, although in its making was used only about one third of the material that the outside manufacturers used. The saving on one style of bolt alone amounted to half a million dollars a year. We used to assemble our cars at Detroit, and although by special packing we managed to get five or six into a freight car, we needed many hundreds of freight cars a day. Trains were moving in and out all the time. Once a thousand freight cars were packed in a single day. A certain amount of congestion was inevitable. It is very expensive to knock down machines and crate them so that they cannot be injured in transit—to say nothing of the transportation charges. Now, we assemble only three or four hundred cars a day at Detroit—just enough for local needs. We now ship the parts to our assembling stations all over the United States and in fact pretty much all over the world, and the machines are put together there. Wherever it is possible for a branch to make a part more cheaply than we can make it in Detroit and ship it to them, then the branch makes the part.
The plant at Manchester, England, is making nearly an entire car. The tractor plant at Cork, Ireland, is making almost a complete tractor. This is an enormous saving of expense and is only an indication of what may be done throughout industry generally, when each part of a composite article is made at the exact point where it may be made most economically. We are constantly experimenting with every material that enters into the car. We cut most of our own lumber from our own forests. We are experimenting in the manufacture of artificial leather because we use about forty thousand yards of artificial leather a day. A penny here and a penny there runs into large amounts in the course of a year.
The greatest development of all, however, is the River Rouge plant, which, when it is running to its full capacity, will cut deeply and in many directions into the price of everything we make. The whole tractor plant