The chemistry behind that is simple and well known for some time. The novel idea is that Al can be used as a storage for H which is much denser than you could e

The chemistry behind that is simple and well known for some time. The novel idea is that Al can be used as a storage for H which is much denser than you could ever achive with compressing H. In the end a car would then be fueled by an Al rod and water. The whole transportation nightmare of H2 (liquidification, cooling, etc) would be gone. Al is made by electrolysis as is H2. So it is a staged process, where first the Al is made and later transformed to H2 by an exothermic reaction which generates additional heat which can be used for heating or cooling (via adsorption coolers).