http://planetsave.com/2018/04/16/sweden ... -vehicles/
Wonder who'll be first to hook up their electric bike?Subway systems around the world use a “third rail” system to power their electric carriages. Two of the rails support the vehicles, while the other one carries the electrical current. An appendage attached to the side of the subway cars rides along the third rail and conducts electricity to the motor. Sweden has converted a short portion of highway near Stockholm to a similar system that recharges electric vehicles while they drive.