Telsa can build out fast, but there are a lot of moving parts to get a Supercharger on line. In some of the places by me the issue of the Electric utilities and local approval authorities being able to keep up. We have about 7-8 Superchargers sites within 10 miles of my house and within 15 miles 14 or more. So, Tesla can build them pretty quick. However, of those within 10 miles of my home at least one has been done for over 6 months, but still is not operation because of power company has not installed the transformer. The stalls are nicely lined out there and cleaned up, and the charging stands are installed and covered with padlocked canvas bags. The Tesla V3 Transformer is on site, but not the green power company transformer.