What is a Hydrofoam exactly?

Hydro foam (rc boat, rc plane and rc car in one machine) are unique new radio controlled gadgets. They combine three machines in one: it is a powerful radio controlled speedboat, it can be used on land (grass, concrete, streets) as well as it’s main function: it is also a rc plane. So combining a rc speedboat, rc plane and rc car in one machine. As the video shows you: this is ultimate gadget for big boys!

(invented by Michael Connally )