I don't know....he started talking about how that was done with the S and now X, but the way he was phrasing his words it sounded like he was getting to a BUT in his sentence and then went on a tangent. He never actually answered the question.
Funny. I didn't get that at all. In fact he plainly said they would offer highly optioned versions first, to pay off costs, as they did with the S and X.
I posted this because there had been so much speculation on other threads on this forum and thought words straight from Elon would answer questions - anyone who wants to listen for themselves can listen to the playback here and decide. It's at about the 48 minute mark.
http://ir.teslamotors.com/events.cfm