Fuel cell cars that use hydrogen as fuel have the potential to be quiet, produce low emissions, and require less maintenance than gasoline cars. What negative effect might hydrogen fuel have on the environment?

Society will drive more because the fuel is cheaper and more abundant.
To produce the hydrogen, a fuel must be burned and emissions will be produced.
More cars will be on the road because they will be cheaper and less costly to drive.
Hydrogen is dangerous and many vehicles will explode before technology becomes safe.

Question

Fuel cell cars that use hydrogen as fuel have the potential to be quiet, produce low emissions, and require less maintenance than gasoline cars. What negative effect might hydrogen fuel have on the environment? 
 	
	Society will drive more because the fuel is cheaper and more abundant.
	To produce the hydrogen, a fuel must be burned and emissions will be produced.
	More cars will be on the road because they will be cheaper and less costly to drive.
	Hydrogen is dangerous and many vehicles will explode before technology becomes safe.