You might be ignoring some big issues, such as grid availability on highways, and the capacity of the grid in those areas.
Here's an example of the light pole chargers that are being installed in residential areas in London:
https://www.ubitricity.co.uk/b2b-local-authorities/
They deliver 5.5 kW, which is fine for overnight charging.
They are also installing a few 43kw charging points for faster top-ups.