Charging time is important but not nearly as important as the energy density capacity and cycle lifespans of current battery technology. Three legs to the stool before battery based systems become unrivaled. Thankfully we're seeing fascinating advances with all three aspects!
Charging still relies n supply of electricity and if high demand electric power increases due to electric cars will the supply be green or coll based? How the cost of electric power be affected. How is the process of manufacturing of the electric car battery's utilizing electric power, will it also cause increase in energy? But yes there is progress made.
