where do you get them repaired

At this facility, Dedham.

At the Tesla Service Center, there is one in Dedham MA and another in Watertown MA.

If you can schedule with them, they will meet you anywhere in the area, leave you with a loaner car, usually a tesla, and then do the opposite when they are done. They will also clean and wash the car before returning it to you.

Depends on what needs fixing. For example, tire changes can be anywhere.

Or they have mobile repair. Just call them, they will help.

Or the one in Watertown