Until they realize that all that water vapor being released will indeed start a trend in global warming.
Until some smart guy takes the water exhaust and puts it in a collection container marked “survival water” so if you ever get stranded, you’ve got potable water in the car.
How about all that extra water vapor being released into the freezing New England winter? Will that turn to ice on the roadway or does that get absorbed into the air?
Here's how it works:
1) Somebody burns coal, or natural gas, or oil, or runs a nuclear reaction, or piles up water behind a dam, or some such thing, to generate electricity.
2) Somebody uses that electricity to crack water into hydrogen and oxygen gas.
3) The oxygen gas may be used, somehow, but it ends up in the atmosphere.
4) The hydrogen gas is combined in the fuel cell, with atmospheric oxygen to form water and electricity.
5) The water ends up back in the environment (where it originally came from); the electricity runs the car.
Beats the heck out of trying to recharge a battery.
That will be the least of the problems. H2 molecules are tiny and hard to contain. Gas leaks will be common. H2 floats up into stratosphere where it eats the ozone layer.
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Until the sun begins to emit more energy, there is no hope for global warming.
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