Since ver 12 is Ai based isn’t it supposed to be constantly improving on its own with not much input from Tesla?
A bit more complicated answer than
@brkaus.
OK: We all own a working Neural Network: i.e., our brains. And, no kidding, our brains can learn and all that jazz.
But just because something is called a neural network doesn't mean that it works exactly like, or even similarly to, our brains.
For one thing, our actual living brains will actually
grow neurons under the right stimulus, a capability that I'm not aware of any physical man-made hardware having.
Now, in the Generalized Block Diagram of how any old neural network can be put together (this includes our brains and Other Things), one can have feedback from the output of the neural network back into the input of a neural network. Neural networks work, kinda, on the idea of "weights", where the multitudinous inputs on each cell of a NN have individual "weights"; when enough signals get through these weighted inputs, then the cell in the NN generates its own output, which then goes to further cell's input nets and so on, ad infinitum, or until one gets to the output(s) of the NN.
With feedback, the outputs can be sent back to modify the weights. If done correctly, one might term this, "learning". So, in principle, again, one could train a NN to do something different. And, in fact, that's definitely what Tesla is doing in their development process.
The question of whether that's done on the hardware/software released on the Teslas driving around the landscape has, at least in this forum, ruled out. Apparently, some Tesla developers have made statements on Twitter/X that the actual weights and programs are checksummed and delivered as a fixed package. Of course, Twitter/X isn't the world's most stable platform, so that leaves wiggle room.
On the other hand, it's possible to dream up a scenario where some semi-fixed scratch pad area in the flash RAM gets modified over time.. if Tesla's doing that, then nobody's talking.
So, the proper answer to your question is: Nobody Knows For Sure, but the preponderance of evidence, such as it is, is that Tesla's Not Allowing per-car learning.