As electric vehicles (EVs) become more and more common on the road, the basic problem of how to charge them reappears. For EVs to be truly practical, they need to have accessible charging options. That's why range anxiety is still a real concern and many EVs are confined to major cities, where electric charging stations are usually available. While electric cars are often ideal for city dwellers, the bigger environmental concerns are often out on the highways were vehicles traveling long distances can cause a significant amount of CO2 emissions.
As a result, plug-in charging stations are already being replaced by stations that can charge electric vehicles wirelessly. For example, Momentum Dynamics Corporation is already working on wireless charging systems for fleets of electric buses in the United States.