Batteries still are the main issue with electric cars. The range, charging time and battery life are getting better but still don't match hydrocarbons.

It's just a great storage mechanism.

Storage is also a big issue when it comes to renewables. You could take in carbon in areas with lots of sun and ship the fuel to areas not well suited for solar generation.

This really would be a game changer for lowing the net carbon output.

This also means you could solve one of the big problems in the power grid, peak generation. Use the extra capacity during off peak hours to generate fuel that is later used to fire up power stations to supply peak demand.