Attendees look at an Audi AG A3 e-tron electric vehicle on display at the 43rd Tokyo Motor Show 2013 in Tokyo, Japan, in November 2013. Bloomberg 
Attendees look at an Audi AG A3 e-tron electric vehicle on display at the 43rd Tokyo Motor Show 2013 in Tokyo, Japan, in November 2013. Bloomberg 

On the charge: plugging into the world of electric vehicles