Pradeep
Storage? I am Storage!
I think at this point the "hydrogen highway" concept is as dead as a door nail. It offers no advantage whatsoever over today's much better batteries, and has lots of drawbacks (extra complexity, cost, the need to carry a very dangerous fuel). Sure, electrics need charging stations. If enough people start buying them these stations are almost trivial to add. Remember that when gas cars started being made there weren't an abundance of gas stations, yet somehow we managed.
To me, a consumer of natural gas, hydrogen production could be powered by a solar array, combined with a small fuel cell generating enough power for the house, hot water also a benefit. Electric charge times are very lengthy compared to a fill of 5000 bar hydrogen, and 4kg in a composite protected cell that disperses into the atmosphere is preferable to 15 gallons of petrol that will pool and explode.
From what I see the all electric cars need at least 3 hours to fully charge, this with a 240 Volt 70 Amp connector which is beyond my 100 Amp service.