The rental cost of the replacement machine does not constitute general damages since the Reading does know for certain that Strip Mining, Inc. plans to use the machine. It might be planning to resell it, for example.

the rental cost of the replacement machine constitutes general damages. It is the sort damage that typically follows in the ordinary course of things from a delay in delivery of a machine to a commercial enterprise, and the railroad is presumed to know that such damages may well follow from the breach.