Sweden builds electrified road that powers cars through electric rails
What are the fossil fuel, pollution and carbon costs of retrofitting all of these highways? What are the fossil fuel, pollution, and carbon costs of producing the electricity? How long will it take to recoup these costs? How long will this infrastructure last before it needs to be completely rebuilt? What is the long-term savings over two lifespans of the entire system?
Without these and other answers one cannot tell if the "improvement" is an improvement at all. Most likely it is either a net detriment or a near zero change both for huge costs up front.
These are the wages of believing in dystopian fearmongering.