Count wireless vehicle charging system sales as yet another sector in which both supply and demand will soon surge because of the growing popularity of plug-in vehicles. The relatively nascent inductive charging market will more than double every year from 2012 to 2020, research firm Frost & Sullivan says. With inductive charging, a driver can simply park the vehicle over a sensor in the ground or on a garage floor and have the vehicle recharge without the aid of power cords.