If we built cars that only released vapors into the air wouldn't we have another environmental problem?

It appears to me that millions and millions of cars putting water into the air would have its own impact on the environment. Would everyone start complaining that we have far more rain fall than we used to?If we built cars that only released vapors into the air wouldn't we have another environmental problem?Not really, water vapor is naturally in the atmosphere at such a point it would not really effect levels. The really problem with using hydrogen powered cars on the road how energy it would take to make the fuel. Currently it is a very expensive process which requires large amounts of fossil fuels.If we built cars that only released vapors into the air wouldn't we have another environmental problem?
As far as I know, they pretty much only release vapors now.If we built cars that only released vapors into the air wouldn't we have another environmental problem?Yes there would be an increase in rain but u will probably not be able to measure it. The environmentalist pushed through scrubbers on power plants ,so how Many millions of gallons of water is now in our atmosphere but most don't even know.If we built cars that only released vapors into the air wouldn't we have another environmental problem?
Cars put a huge amount of water in the air right now. Gasoline has a lot of hydrogen in it.



And global warming threatens to reduce rain in the inhabited areas of Earth, increasing rain/snow in the polar regions.



http://www.ipcc.ch/SPM2feb07.pdf



Since we can't totally stop global warming, only reduce it, a little more rain wouldn't be a bad thing.If we built cars that only released vapors into the air wouldn't we have another environmental problem?Could happen like that..but i guess we could always find some way of still having a water shortage..If we built cars that only released vapors into the air wouldn't we have another environmental problem?
Actually, fossil fuels already put vapors into the air, just look at the formula for gasoline combustion. The real problem is that it takes a lot of energy to compress hydrogen and instill it with power. So, that will take fossil fuels until we start finding a way to better harness solar power.