When talking residual and all that - you're basically "already selling the car". Any thought of buying the car and keeping it 10 years? That averages out to under $10k/year for a 90D and maybe $14k/year for P100D. However, residual and depreciation is hardest hit during first 2-3 years. You can look for a CPO or high mileage loaner and take a good amount off the sticker price for a car slightly used. A new, higher-mileage, loaner would offer the biggest bite out of the early depreciation. I would bet you will see P90DX for up to $20K off at year end for the loaners with Vin #s below 14,000. The "P" option is a $10k retail software switch plus possibly heavier contactor (why don't they just install that contactor in non-P models so they can up-sell a post-delivery "P" upgrade?). The depreciation of that alone is probably $7k after 3-years.
Plus the non-P 100DX will be available soon. If you really "need" the range, wait for that. I doubt that 10kWh makes a big difference to most people unless they must commute 150 miles to work at 85mph and need a full charge to do it every day.
