Submitted by compchat on 24. November 2017
In case you have a similar situation you might wish to know that if you turn in your Model S and purchase a Model 3 you will have to wait until your lease is up unless you wish to drive two Teslas. My Model S lease is up April 2018 and I was told by customer service that I should wait to order my Model 3 until the turn-in date coincides closely with the pick up date for the Model 3. They said the invitation will remain valid but the time between order and delivery may increase as they let more and more people into the ordering que. Of course the risk becomes that the que goes from 30 days to 90 days.