This may be old news, but I saw an ad on TV for Carvana's new vending machine service, which sounds totally crazy. But they do sell Model S's so, you could feasibly buy a Tesla from a vending machine. Wonder if that is a better process than the current CPO program, LOL.
https://www.carvana.com/search?SortBy=MostPopular&models=fN&page=1
https://www.carvana.com/search?SortBy=MostPopular&models=fN&page=1