It has to do with other companies catching up and surpassing Tesla. Tesla's are a bad deal nowadays because of build quality and the company slashing prices(which kills resale value). Has tesla refreshed their lineup yet?

Plus the whole CEO is a psycho nazi thing.

edit: yeah, there's an article over on the verge talking aout how used tesla prices are plummeting because everyone wants to ditch their teslas. It's probably a decent time to buy a cheap tesla.