The problem is fitting in all those charging stations and the time needed to charge the car has to go down by a great deal.
The Tesla Supercharger is the fastest charging option when you're away from home, allowing you to charge your car up to 200 miles in 15 minutes.
Whether that is true or not I don't know as there seem to be a lot of different numbers when you search on it. But still, imagine a motorway where each car has to spend 15 minutes charging, they have to be huge or there need to be a lot of them or they need to charge them in towers like parking buildings or something.
But also the huge amount of batteries needed, one can wonder how eco-friendly they really are and how these exact numbers are calculated. But there seem to be different views on this as expected.