A station per 60 km is actually nonsense, the grid supports that and it's woefully inadequate.

Population has to be considered. In a space of 60 km, you can have 1 000 000 people easily enough - and 1 charging station is a joke to them. :o

(Writing this from Estonia, in the most densely populated district of Tallinn, we have maybe 6 public charging sockets and something like 50 000 people. A total rebuild of the infrastructure is required. No amount of expensive CCS or ChaDemo stations will solve the problem. It has to be something primitive and cheap deployed in large numbers: either Type 1 or Type 2, and the price tag has to be reasonable enough to fill entire streets with them.)