“Even if it’s true the batteries can be charged that quickly, there is still the considerable problem of power. It takes hundreds of millions or maybe a billion joules to drive a hundred miles, so for that energy to enter the battery in a few minutes means you need megawatts of charging power, which not many places have, and they won’t be cheap.”
Another issue is that generally, the greater the charging speed of a battery/capacitor technology, the greater the self-discharge rate. When one of these “game changer” technologies comes up, not talking about that is an automatic alarm bell.
The faster the charge, the faster the degradation of the battery as well.