With only 50,000 electric cars on the road now, many charging stations are free - but what happens when the number multiplies? Electric car charging companies are counting on the number increasing and are determining "how to charge for the charge."
Sep 20, 2012 The Wall Street Journal
Charging stations for electric cars are multiplying much faster than the plug-in vehicles that can use them for many reasons. While the federal subsidies help, some in the business community believe that the chargers will attract new customers.
Oct 20, 2011 The Wall Street Journal - Technology