Major automobile manufacturers across the globe, namely BMW, Hyundai, Daimler and Toyota along with leading gas manufacturers namely Linde and Air Liquide and the AngloAmerican mining company have set their hopes high on readying more number of vehicle that supports hydrogen fuel so as to make our environment cleaner and, in turn, reduce global warming. This is because hydrogen's residue is water when set on combustion unlike petrol that emits harmful greenhouse gases.
The major concern would be to make the technology more cost effective so as to increase its sales. Also, they would concentrate on improving its output by working on efficiency of electrolysers which break down the molecule of water in to respective hydrogen and oxygen molecules and draw energy out of the reaction, and the input of high amount of electricity, solar and wind energy.
It seems like we have become well aware of the drawbacks of the currently existing transportation system and are working collectively and speedily to improve upon each and every one of them. People die of road accidents, we aim to build self driven intelligent cars technology at Waymo. Traffic is a big issue, but may be not in the near future as we bring flying cars to the markets soon. There is too much pollution, how about electric and hydrogen fuels to switch over to? With such advancements in the kitty, the future of transportation seems much more promising.