The other 7% of the solution.

But it is not possible now, because there is not enough capacity, and it is going to be unworkable to install 100 times what there is now for a 100% BEV fleet. That is the issue.

Yet 100 times more isn't what's needed.

Most locations today are single charger or two chargers.

These are very inefficient due to queuing theory.

Assuming random arrival times:

With one charger, if it is in use even 10% of the time, you have a 10% chance of needing to wait, and the average wait will be half of the charge time. So the average charge time is 105% of the usual charge time. Which is simple to compute.

With 100 chargers in use 93% of the time, you have an average wait time of 5%, and the average charge time is 105% of the chance of needing to wait. I used a calculator.

If an average wait of 5% is acceptable, adding 99 chargers to the original single charger adds 1000 times the capacity.

A system wide design might start with noticing the existing distribution of gas pumps. Assuming home/work/hotel charging for almost everyone:

Most of the gas pumps that service local traffic are not needed to be replaced with DC chargers. This is about 95% of the gas pumps. These are often smaller stations, so are less efficient due to queuing theory.

Most of the freeway gas pumps that mostly service long distance travel need to be replaced with more DC chargers. How many more depends on range and charging speed, and don't forget that that a journey that takes n * effective range needs n-1 charging stops.

If the range of an electric car is half of a gas car, and it takes ten times as long to charge as refuel, then less than 20 times as many charging stations are needed as gas pumps for distance travel. And don't forget that larger numbers of charging stations are more efficient due to queuing theory.

Notice that the total number of dc quick charge stations needed is very roughly equal to the number of gas pumps. Might even be less. Might be a bit more. Just distributed much differently.

This is rough back of envelope type calculation, please feel free to suggest improvements. Do notice that electric cars are getting more range, and faster charging.