Makes more sense than them being hydrogen!
Why do you need to store it in hydrogen? You can sell the same surplus wind energy to charge electric cars and incentivise them to use the times of surplus via time of use/agile pricing - that’s your storage.
Electrolysis plants are not really a flexible energy sink, they have start up losses and really need to be ran continuously. You are not going to invest tens of millions into an electrolysis plant and only run it every other week. That sounds like the quickest way to go bankrupt.
We are decades away from decarbonising existing uses for hydrogen, let’s concentrate on sorting that before trying to shoehorn it into passenger cars where other solutions which are better.
Despite all the money Toyota has ploughed into fuel cell cars, the only advantage of the Mirai is refill time over BEV and tailpipe emissions (probably no total emissions is using brown hydrogen) over ICE.
The advantages of BEV/ICE are numerous by comparison.
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