This is a very interesting discussion. Prior to my Model S I was a Leaf owner. I came to the table with a fair bit of knowledge on what it means to drive electric. That being said there is so much to learn about the car it can be overwhelming. From setting up / using the scroll wheels to taking multi day trips. 18 months and 30K miles later I am still learning. I think it would be too much to expect the delivery specialist to cover all the possibilities. I'd hazard a guess most folks just want to sync their phone and then go drive (haha). In addition to this forum, Owning Model S and Tesla Model S Best Car Ever are two resources I steer new owners to.