You would first have to replace every major road before you could eliminate the batteries.
My tax dollars better never be thrown away this way.
Road surfaces are continuously being replaced and maintained already. What the roads seem to require are simple metal coils connected to the electric grid, not complex technology.
We are in a domestic oil boom, but naturally that will not last forever. It took 35 years to build the original designated interstate highway system. Given the maintenance of that, it could take 40 years or so to lay these coils down. By the time our oil and gas boom starts declining, we will have something to replace it.