The bots already posted this, but Tesla modified their financing / residual guarantee offer today.
Biggest change to the residual is that the buyback guarantee from 36-39 months is no longer based on the 42% of an S-Class MB, but instead on the highest resale between similarly-priced MB, BMW, Audi and Jaguar. Looking at the details, they are offering it at 50% of the base price, plus 42% on the options (see here:
http://www.teslamotors.com/sites/def...-guarantee.pdf), which would put the residual on my config at 49%. Not a bad bump.
The other change is that they are now offering financing up to 72 months and 15% down -- the original offer was up to 63 months with 10% down. I'm not borrowing nearly as much, and will not borrow for more than 60 months (I might do 48 or 54 instead though...) -- so this has no impact on my financial model...