What is, "cars that run on fuel cells?"?

Question

How can cars that run on fuel cells prevent global warming or reduce pollution?

Answer 1

Sadly, fuel cell cars are a boondoggle, a diversion to hold back electric cars. An electric car will always be cheaper to buy and operate than a fuel cell car. I believe my explanation below will make this obvious.
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A fuel cell car IS an electric car - it even has batteries, because the fuel cell can't output enough electric current for the car to accelerate without them. So take the price of an electric car, then add the price of a fuel cell. It is going to be more expensive.
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Next, as to the cost of operation - both cars use electricity. Here's where most of the public discussion of Hydrogen goes wrong - hydrogen is not a fuel - it is not a magical source of energy - it is really an energy carrier, just like a battery.
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Hydrogen is usually extracted using water and electricity. When the fuel cell uses the hydrogen, we get water and electricity back out. That's a reversible chemical process, exactly what a battery does. Except that batteries are much more efficient than the hydrogen process is. This means electricity for a pure electric car will be cheaper than the electricity for making hydrogen.
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Plus, in the case of hydrogen, there are also costs (and additional pollution) associated with trucking and storing the hydrogen.
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Electric vehicles are cheaper and cleaner across the board. They are also much cleaner than gas vehicles, even when power plants burn dirty fuel, because EVs make much more efficient use of energy than typical cars do.
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Answer 2

A car that runs on a Fuel Cell... a fuel cell is a type of unit that creates power from an alternate energy source. Such as a hydrogen fuel cell, it runs off of hydrogen, its by product is water. It is a clean alternative fuel source.

Answer 3

Fuel cells generally mean battery powered but can also be hydrogen tanks that some experimental cars run on. With a battery powered car the battery would be considered the source of fuel, thus fuel cell.

Answer 4

It is a joke. It will NEVER happen. Fuel cells will NEVER become economically feasible to power the vehicle fleet in any significant way. I should know, my Master's thesis work involved Polymer Electrolyte Membrane Fuel Cells (PEMFC's)!