If hydrogen cars are so great...? since cars emit the gas co2, and its causing global warming, by switching to hydrogen, wouldnt that just cause more floods by putting more water in the air? also, why are car companies pushing hydrogen so bad? battery cars are cheaper arent they?

Other Answers (12)

• Water vapor does not cause floods. Batteries are also bad for the environment, because they create dangerous waste. I%26#039;m not sure why hydrogen cars are the option of choice for car manufacturers at this point.
• YOU ARE WRONG!!!!!!!!!!!
  
  water doesn%26#039;t have the combo of co2
• Hydrogen is a means of storing energy. It%26#039;s not something you can mine. You reduce the total amount of water when you make it. Then when you burn it, you get that same water back. The real problem is that H2 gas is hard to store efficiently. As to why car companies love it, it burns in the same engines that gasoline does. So they don%26#039;t have to do much. For years the problem with electrics was that we couldn%26#039;t store enough energy in normal batteries. That%26#039;s changing now with the new Lithium storage batteries.
• Hydrogen is super efficient, more efficient than regular batteries, that%26#039;s why.
  
  No there won%26#039;t be floods, though if everyone switched over you may just have more rain if it%26#039;s really hot enough to evaporate it away. But most will just drain through your city%26#039;s storm water I guess. If you%26#039;re worried you could just stick a bottle on the tailpipe to collect the water and you could drink it.
  
  It definitely beats the alternative of putting smog in the air.
  
  The car companies are pushing it because they have to, gas won%26#039;t last forever, and it%26#039;s bad for the environment, and people like the environment, and dislike smog too. Hydrogen is super efficient, clean burning, and best of all, once switched over, will be cheap.
• The batteries required to run vehicles are big and they are a concern for the enviroment once they are disgarded.
• Hydrogen fuel cells give off h20 and co2 plants thrive on
  both. he hang up with batteries has been charging time
  and limited number of cycles. hydrogen would fuel faster
  and not have cycle problem. However hydrogen is not easy
  to store,compress and use in automotive systems yet
  that%26#039;s the current cost hangup.
• Hydrogen cars are not so great. Why? Oil is burned in the production of hydrogen. What happens when oil is burned? It pollutes. Hydrogen cars are strictly a feel-good for uneducated environmentalists.
  
  Electric cars aren%26#039;t great either. Why? You have to plug them in. When do people plug them in? At night. When is the sun not there, rendering solar power useless? At night. When does the wind die down, rendering wind farms useless? Night. What are we left with? Either nuclear or Good Old Combustion. What does combustion do? POLLUTE!!!
• The hydrogen that would be used to power hydrogen powered cars would usually come from spliting water into hydrogen and oxygen. After the hydrogen is used it is combined with oxygen to reform the water, so there is no more water at the end process that at the beginning. Hydrogen is better because it is about 25% more efficient that gas with no harmful emmisions.
• Not safe or practical. WaaaaaY to dangerous for the average dummy to use or load into a car. Way to explosive in a crash situation~no survivors is guaranteed.
• I%26#039;m not actually giving an answer to this question, but I%26#039;m just writing to say that all those who are saying that hydrogen cars are worse for the environment are smoking something. No oil is burned in the refining of hydrogen, and as for the one who said that hydrogen cars require clean water and that oil is needed to separate the water, he is wrong! They require hydrogen not water.
• More water in the air is not a problem. It%26#039;s much better than the stinking black gasses that are emitted right now, wouldn%26#039;t you agree? Besides, air can only absorb a certain amount of water. So if the air is satiated, it will no longer absorb water from the grounds and leafs or stuff. So it won%26#039;t cause more flooding.
  Batterycars are cheaper, because the technology is older. Just like notebooks are becoming cheaper (not as quickly as i want it to be, though).
  I hope the prices of hydrogen cars will lower. Cause that%26#039;s the best way of driving a car: no polution at all!