Just wanted to add this link that I saw. It looks like they built the infrastructure to handle more changers at a later time. The additional chargers should be open to other electric vehicles. I also enjoyed the last bit of the article.
Tesla charging stations now at Kennebunk service plazas
FYI: the two southbound chargers are still roped off as of yesterday.
Tesla charging stations now at Kennebunk service plazas
FYI: the two southbound chargers are still roped off as of yesterday.