I've got no skin in this game but I'm watching this with a bit of concern, honestly. I do believe that these cars will only start moving in the 80s (C$) - only because when I had decided to buy (a month prior to the D announcement), that's the point at which I would have gone used instead of new myself. None were available at that price at the time, so I ordered new. I'm concerned, because I expect that the same thing might happen to the Ds in a year or 2 if the battery range is bumped - or if Tesla massively upgrades the technology in the dash - or something else.
Teslas are different then typical cars. They're a cross between a car and a tech gadget, and sell predominantly to people who love tech - and who desperately want the latest toys. And they're still at the beginning of the development curve - which means that the design changes from year to year are going to be dramatic. All of these things point to very rapid depreciation.