"But scientists have yet to develop an affordable, active water splitter with catalysts capable of working at industrial scales." "The nickel/nickel-oxide catalyst significantly lowers the voltage required to split water, which could eventually save hydrogen producers billions of dollars in electricity cost"

Making it more plausible I suppose. The only thing I have a problem with is that they used a battery, which required electricity to be initially charged. The electricity had to be generated somehow. If we plan to use <insert renewable energy here> to charge the batteries to split the water to generate the hydrogen to power our cars, I think very few people will be driving.