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EU passes law to blanket highways with fast EV chargers by 2025
(www.theverge.com)
This is a most excellent place for technology news and articles.
This article is about the EU...
As for rural vs urban, the charging locations I mentioned were in rural areas. One of the towns has a whopping 1500 people. The other towns are not much bigger.
As for where you live, you can check out PlugShare to see how many fast chargers are near you. It really is not much of an issue in developed countries outside of maybe trying to go from eastern Australia to Perth but no sane person does that drive. The other places I could see being an issue would be Yukon, Nanavut, and Northwest Territories in Canada.