Your comment seems seems to me like a classic strawman. The electric power production is being decarbonised and more money is spent on renewables than fossil energy. [2] if you feed that energy to a battery car, you need less power production than if you feed it to a hydrogen car.
Hydrogen may provide a viable alternative, but it seems to me that the substantial infrastructure needed is going to be costly [1] and the electric infrastructure is well built out already.
[1] http://tonyseba.com/toyota-vs-tesla-can-hydrogen-fuel-cell-v...
[2] Overall, more than twice as much money was spent on renewables than on coal and gas-fired power generation ($130bn in 2015), the REN21 global status report found. https://www.theguardian.com/environment/2016/jun/01/renewabl...
That's it. Don't go hunting for your something else, it's just wasting time. Nuclear, given lead times and more, is also quite possibly wasting time, though I'll allow some possibility it isn't. Long-term though, it's almost certainly highly problematic.