The evidence that 3 years later, no base models have actually been delivered, those that were finally able to order them were bait and switched into upgrading or face even longer delivery timelines?
Except that they actually have a limited form of self-driving, which has proven successful over millions of miles of driving?
Comparing something to Theranos only works if that something doesn't have a working product. You can see that Tesla's autopilot works. It isn't perfect yet but it is a real thing.
If you were buying a car, would you not judge it by its merits, such as its handling abilities, safety, fuel costs, pollution, and ability to get you from A to B? That is the kind of consistency which most people look for when buying a car.
Can you give us some examples of all of this evidence?