A hydrogen highway is a chain of hydrogen-equipped filling stations and other 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, (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.
The use of hydrogen cars has been proposed as a means to reduce local pollution and carbon emissions because hydrogen fuel cell cars emit clean exhaust. However, as long as the majority of hydrogen continues to be produced by burning fossil fuels, pollution is emitted by the hydrogen manufacturing process.
Read more about Hydrogen Highway: Germany, Italy, Japan, Scandinavia, Spain, United States
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