Why an EV charger that drops from the sky could be a game-changer

MacGyver would be proud.

There are basically four main barriers to adoption of electric vehicles. First is cost. Currently, they are more expensive than their gasoline-powered equivalents. Second is range anxiety — the fear that the car will run out of electric juice without a charger in sight. Third is time. The few minutes it takes to fill up with gas is replaced by charging …