Last week Tesla reached a milestone of 2,000 Superchargers worldwide, located at almost 400 Supercharger Stations in North America, Europe, Asia, and Australia. Tesla Superchargers enable free long distance electric driving across the United States, and up and down the West and East Coasts. They connect the United Kingdom to continental Europe and stretch from the south of France to northern Norway, far up into the Arctic Circle. In China, Superchargers link major cities along the coast, and we recently opened Supercharger stations in Japan and Australia.
The Roadster 3.0 package applies what we've learned from Model S to Roadster. No new Model S battery pack or major range upgrade is expected in the near term.
On the one-year anniversary of Tesla’s Cross Country Rally, we set out to drive non-stop from San Jose to Los Angeles on a single charge in a prototype of the Roadster 3.0 upgrade.
As the Model S family has expanded over time it has become more relevant to compare range from one variant to another with a consistent set of assumptions so our customers can know what to expect and make the best decision to fit their needs. This can be a bit difficult since the background test methodology and standards from the US EPA are evolving over time. There are also many customer vehicle configuration choices, both before and after purchase, that can affect range as much as or more than the vehicle platform choice itself.
Battery technology has continued a steady improvement in recent years, as has our experience in optimizing total vehicle efficiency through Model S development. We have long been excited to apply our learning back to our first vehicle, and are thrilled to do just that with the prototype Roadster 3.0 package. It consists of three main improvement areas.
At an event in Los Angeles last year, we showcased battery swap technology to demonstrate that it's possible to replace a Model S battery in less time than it takes to fill a gas tank. This technology allows Model S owners in need of a battery charge the choice of either fast or free. The free long distance travel option is already well covered by our growing Supercharger network, which is now at 312 stations with more than 1,748 Superchargers worldwide. They allow Model S drivers to charge at 400 miles per hour. Now we're starting exploratory work on the fast option.