What about a small hot-swappable battery compartment in EVs that give you enough kms to get home (like a jerry can of petrol). I'm not sure if the size of battery needed for a car would be prohibitive though. How big would a ~30km battery be?

Then instead of charging points, you could have something more like a petrol/filling station. Pop in, swap your pack, and drive off. (You could even plug the car in for a fast charge while they do the battery swap).

My model for this is the hot-swappable battery packs that the electric scooter networks in many Asian countries employ. [0]

[0] https://www.wired.com/story/battery-swapping-tech-gives-elec...