A hydrogen station is a storage or filling station for hydrogen, usually located along a road or hydrogen highway, or at home as part of the distributed generation resources concept. The stations are usually intended to power vehicles, but can also be used to power small devices. Vehicles use hydrogen as fuel in one of several ways, including fuel cells and mixed fuels like HCNG. The hydrogen fuel dispensers dispense the fuel by the kilogram.
http://en.wikipedia.org/wiki/Hydrogen_station

A hydrogen highway is a chain of hydrogen-equipped filling stations and other hydrogen infrastructure along a road or highway which would allow hydrogen powered cars to travel. It is an element of the hydrogen infrastructure that is generally assumed to be a pre-requisite for mass utilization of hydrogen cars.

For instance, William Clay Ford Jr. has stated that infrastructure is one of three factors (also including costs and manufacturability in high volumes) that hold back the marketability of fuel cell cars,[1] (some commentators, such as Amory Lovins in Natural Capitalism, have argued that such infrastructure may not be necessary). Hence, there are plans and proposals to begin developing hydrogen highways through private and public funds...
http://en.wikipedia.org/wiki/Hydrogen_highway