British Highway Will Recharge Your Batteries as You Drive - IEEE Spectrum
They can also converse with your car’s battery to transfer power to it. It’s a scheme known as magnetic resonance coupling, and it was pioneered in a small Korean tram system two years ago, as IEEE Spectrum reported at the time. Now Britain is planning a pilot project using the same idea. It’s to begin later this year, and if it proves out, the government says it will proceed with tests on actual roads.
The point is to overcome range anxiety—the driver’s fear that he might not make it to the next recharging station—and to save the half hour or more that conventional recharging requires.
Engineers have toyed with wireless charging for more than a century, but most such schemes lose too much power in transmission and require impractically short gaps between the pavement and the car. Magnetic resonance coupling solves both of these problems, as the Spectrum article explained back in 2013: