As a Tesla owner let me tell you, the range is way off. 310 miles at 100%, if you do 70 mph for 180 miles you'll probably be around 20% battery. Not sure if you did the whole trip at 30 mph stop and go, maybe that's how they get the made-up range figures. And yes I preheat the battery before...
They're building a SC in Shelton CT "opening in 2024" as well, according to customer service. I hear construction has not started yet but it's in the works, they own the property etc.
That should help alleviate a lot of pressure from CT, RI and Western MA.