**Hydrogen fuel cells for cars of the future-3

Continuation of 2nd part
Fuel cells have been around for over 150 years and offer a source of energy that is inexhaustible, environmentally safe and always available. So why aren't they being used everywhere already? Until recently, it has been because of the cost. The cells were too expensive to make. That has now changed. This is because of recent changes made in the cell.
To be continued...