Engadget news page, preach, this rocket is driven by three driving machines used in Falcon 9 rocket. That is, this rocket launcher can carry the load up to three times from Falcon 9.
Previously, SpaceX also intends to develop Falcon Heavy's rocket head to return to earth to be reusable. However, it seems that the intention is undone due to technical constraints.
After all, Musk did not expect much from this first launch of Falcon Heavy. In a space conference in Washington last week, he predicted the rocket would not reach its orbit in its first session.