I am working on this: https://onlyusedtesla.com/
A marketplace to buy / sell a used tesla.
My opinion is that Tesla is doing EVERYTHING differently. It would be highly likely that the Tesla on-board vehicle super-computer (currently made by Nvidia - leader in AV tech) could easily handle selling the used vehicle per the owner's request automatically online. All Tesla vehicles are connected to the web via LTE 24/7.
I hypothesize that a Tesla owner or Tesla could automatically upload vehicle mileage, age, options, etc. on to a dedicated used tesla website. Perhaps onlyusedtesla.com can be an exclusive website to Tesla (the company) through a strategic partnership. (know a guy who know's a guy?) can you get me an intro? anyone have elon musks email?