And if they did, would you want, or be able to, sit there for five hours whilst charging? Maybe, but maybe not.
You only need to get enough charge to make it to the next charging point, though. :P
Pity if there's an out of order sign when you arrive, though. So really, you need to charge enough to get the next charging point, and the one after that, or "the next charging point, and back, again".
Yeah, and you'd be shit out of luck if it was 460km away.