ZBB
Emperor
I'm 99.99% sure Elon is only talking about changing the rear seating area with no outside physical changes to the car. Any thought of stretching the S at this point in time makes no sense at all IMO.
I disagree... Look at the market for China... Audi sells long wheel base versions of both the A4 and A6 that are not sold in the US or Europe. Likewise BMW sells lwb versions of the 5 and 3 (which is new...). I'm in Shanghai for work this week and saw a 525Li on my way in to work this morning -- and the extra length in the rear door is noticeable. Tesla will be competing with those cars (as well as the MB S, A8 and 7 series) -- so expect a subtle stretch of the S -- probably about 4-5 inches, all in the rear door and legroom area.
These are mostly for additional legroom in the rear though -- so I wouldn't expect the Lexus/Maybach ottoman thing...