"Elon Musk previously guaranteed the resale value of the Model S. Announced in April 2013, those who financed a Model S are allowed to return the vehicle after three years for 43 to 50 percent of its sticker price — just in time to buy a new Tesla vehicle."

I wonder why those numbers are so low. For reference, I recently leased a 2015 Mercedes C400, and the residual (programmed into the lease) is 61% after 3 years. When you're looking at a $70,000+ car, the difference between 43% and 61% is pretty dramatic.

I'm wondering if Musk/Tesla believes that the technology will change so much that in 3 years no one will want the older Teslas, or just that people who want to buy a Tesla will not care about residual value. Perhaps both?