Re: I wonder how this will play out?
Perhaps in smaller countries this is feasible. I can tell you the cost to do this in the US would not be. Even if they only did this to the interstate highways, that leaves millions of miles of road (most of which would be used by these very vehicles) untouched. The individual states already struggle to maintain current road systems - there's no way they could afford to put this on local and state roads.
Don't even get me started on China - they wouldn't do this anyway as there is no return on investment.
Unless the electric car manufacturers foot the bill to the tune of billions (or more likelt, trillions) of dollars to rework the roads (and maintain them!), I don't know that this is the "future" of our auto system in the world. There's just no money in it.