Buy American, be American, save the planet, and dont fund the Saudis - are all great ideas I am in bed with. So I am seriously looking to buy a used Model S. I have only driven ICE cars so far. I have bought used in the past, so really not sure what to look for when buying a used Model S. - What is the best way to get a check up done on Model S's? - Do Tesla shops do this, apprx cost? - Any other advice you have, I've heard rumors that old cars are not getting new firmware updates, and that buying a service plan on a Model S is waste of $. There is a huge thread on maint. plans, but since the plans have changed over time, I am not sure what is the best advice on service plans. Thanks for your help!