The Supercharger Network is still in its prime, but Supercharger routes currently span the United States from Los Angeles to New York as well as up and down the West and East Coasts. By the end of 2015, Elon Musk promised that 98 percent of the U.S. population will be within 100 miles of a Supercharger station. June saw the completion of the first supercharging locations in China and the 32nd station put into use in Europe.
In a celebratory blog post, Tesla tells that " you can find a Model S charging at a Supercharger any given second of the day, and to date Superchargers have powered a total of 24.7 million miles of driving – which means the world has been spared the burning of 1.1 million gallons of gasoline."
Considering that Tesla started negotiating with other automakers that want to use the propietary network, as long as they help with maintenance costs and don't charge their customers for the energy provided, it seems like Tesla's Supercharger network future is set for the following few years. Good job! Now what about that Model X?