I don't see the charge rate as a problem. [The new MCS standard for trucks will charge at around 3 MW](https://en.wikipedia.org/wiki/Megawatt_Charging_System ht

I don't see the charge rate as a problem. [The new MCS standard for trucks will charge at around 3 MW](https://en.wikipedia.org/wiki/Megawatt_Charging_System https://en.wikipedia.org/wiki/Megawatt_Charging_System), so clearly it is entirely possible to deal with even larger cooling needs than a 720kW system would entail. There are already superchargers with multiple chargers that can in total handle way more than 720 kW. The biggest issue when there are many super fast chargers operating at 1000v will be handling voltage spikes in the power grid.