[cloudwalking]

If you read further down the page it says this Dodger loop will be their first test track, to replace a previously proposed test track in Sepulveda. It's not meant to make money, it's to prove it works. The money will be made in future systems.

[Someone]

One important property of a test track is that, if things don’t work out as intended, you can take it down for indefinite periods for upgrades or even take it down forever. Test tracks don’t have SLAs.

⇒ what Tesla describes here is not a test track, or at least shouldn’t be.