Why do we care about fuel cells? Because they produce electricity in a very efficient manner. And when they are used in Honda’s revolutionary new fuel cell stack, they produce enough electricity to power a real-world car.
Vehicles that use hydrogen fuel cell technology instead of gasoline are about the cleanest around because they emit only water vapor into the air. They also use hydrogen from domestic energy sources, reducing our dependence on oil. And driving fuel cell vehicles significantly reduces the amount of carbon dioxide emissions, helping to slow the increase in greenhouse gases.
In addition, fuel-cell vehicles may qualify for non-monetary incentives such as carpool lane (High Occupancy Vehicle [HOV] lane) access even if there is only one person in the car. California recently extended its HOV eligibility for qualified vehicles through 2018.
 Check local or state laws