Having successfully launched its first ‘Supercharger’ fast-charging stations on the West Coast back in September, electric car startup Tesla has quietly added more of the stations on the East Coast.

The new stations make it possible for owners of the Tesla Model S, the only model currently compatible with the unique fast-charging stations, to travel the 443 miles between Boston and Washington, D.C. without fear of running out of charge.

Previously, the fast-charging stations were only in California, allowing Model S owners to travel between San Francisco and Los Angeles, and out to Las Vegas.

There are just two East Coast locations at the moment, one in Milford, Connecticut, and another in Wilmington, Delaware. Tesla plans to install more stations along the corridor in future, including some that can be powered purely by the sun.

The stations provide almost 100 kW of power to the Model S, with the potential to go as high as 120 kW in the future. Currently, they can provide a Model S with a 150 miles of driving range in about 30 minutes, which is about the distance between each of the charging stations.  

One issue that’s flared up, which The New York Times has noticed, is that since the East Coast fast-charging stations are located in public rest stops, the parking spots next to the charging system might be taken up other road users. They aren’t reserved purely for the Model S, meaning owners may need to be patient if the space is already occupied.