Thing is that. If you drive a gas or battery car you are part of the problem. If you take planes - you are part of the problem.
The pipeline is likely the safest way to carry fuel but if there are only compressed air cars and trucks then there would be no need for it. Either way if we don't personally act soon we will not have a planet that will support us.
Thing is that manufacturing will not support vehicles where no chemicals used (toxic chemicals like lithium and gasoline). That's why Tata motors have no market for their compressed air cars. Cars can be really simple things. How about putting some effort into windup spring technology?