Special uses and transportation of SPMT

Special uses and transportation of SPMT
Have you ever found this kind of uses like the picture? SPMT can work as the carrier of a heavy crane. When the crane is at spare time, SPMT system can leave it aside to do the other work. Is it a method to reduce huge cost?

Another similar case shows SPMT system carries heavy crawler machine on the road. That is a good way to protect the road from damage.