NVM I found the 7 year leasing program.
After a down payment of ~16,000 pound, you get to a monthly payment of 622 GBP for 71 months for a Tesla Model S 60 (not D). http://imgur.com/a/1Asgz
This isn't "affordable" by any means, and this is the most basic Model S, without AWD, autopilot or any other upgrade package.
The autopilot option changes the monthly payments in almost negligible way though.
How do you account for the implied risk that Tesla doesn't exist in 8 years? That's a long ways away, and there's no guarantee they make it.
Or you could short their stock as a hedge, and buy some options to cover the upside risk.
Or you could buy the car using a title-backed no-recourse loan, pushing this risk onto the lender.
Or you could lease the car rather than buy it.
That is the warranty period so I don't think you'll have any trouble:
https://www.tesla.com/blog/infinite-mile-warranty
> the 85 kWh Model S, our most popular model by far, now has an 8 year, infinite mile warranty on both the battery pack and drive unit. There is also no limit on the number of owners during the warranty period.