Hello all, apologize if this has been covered, I could not find it during a search. I am going to look at a 2018 S (75D) on Saturday and plan to purchase. One of the things the dealer cannot tell me (not a Tesla expert) is if it has MCU1 or MCU2. I know that MCU was still used in the "early production" 2018 S models, but don't know the production date of this vehicle. The in service date was September of 2018, but not sure how/where to find the production date. Is there a way of telling by looking at the screen in the car which MCU it has? Thanks, Glenn