Graphene is a sheet of carbon atoms that looks much like a honeycomb and is atom-thick. It is often described to be lighter than aluminum but much tougher than steel. It is also more elastic and flexible than rubber but is harder than a diamond. In short, graphene is an ultra-tough and strong material, arguably the toughest to-date. It is also extremely heat resistant.
These properties are what make graphene a viable ingredient to create protective materials. Metals, plastics, and other products are found to become much lighter and stronger when certain amounts of graphene are added to their composition. Because graphene is carbon-based, it quickly disperses in water, organic solvents and polymer matrices. It is the polymer matrix that is used to coat vehicles.