On the other hand, in the case of electricity there are enormous power stations which don’t have to be mobile. A single power station can service millions of cars and any pollution produced can be filtered at this single source, where environmental control is far more efficient. A modern combustion engine in a car has an efficiency ratio of 20%. A modern power plant has 70%.
As far as batteries are considered, intensive research in this area is leading to recycling and refurbishment of car batteries. And the fact still remains that conventional automobiles also require batteries.