Two things, firstly using power station generated energy is better for the environment because the economy of scale allows for higher efficiency. Even your typical coal fired plant will outdo a Prius ICE in terms of thermal efficiency.

Secondly, I do subscribe to those who want to own and charge their high capacity Lithium Ion batteries at home. But I see a problem. If a small to medium size car runs for 300 miles on a charge and we assume it takes 10hp on average over about 6 hours to do those 300 miles than we're going to need 10hp x 6 hp of energy. Converting this to electric power speak we have 7.46kW x 6 = 45.6kWh of energy to put back into our cars. To charge that in 6-8 hours is going to require a feed of at least 5kW. Doable.

But my example is of a very timid vehicle. If you double the power requirement and then demand a full charge in an hour you are going to need nearly 100kW from your power outlet. Play with the figures. Battery power works for small cars of limited range but forget a 400hp truck.

Back to hydrogen?