Sorry, but that doesn't work. It works for batteries, because YOU are the one inconvenienced if the battery dies. But if the company bears the liability even if you are the owner, then the company isn't going to be willing to allow you to own the car. Not without a huge up-front payment. (The car may drive ever so safely, but accidents will happen, and legal judgments sometimes ignore facts.) I suppose it might turn out that the legal owner was the bank rather than the auto company, but it won't be the presumptive purchaser.
And I'm not sure I see a reasonable way around this. Automated cars are already so automated that people can't manage to pay attention to what's happening (see Ford engineers sleeping). So the liability *has* to be with the auto company. But if the liability is with them, then they're going to need to retain control so they can fix problems, ensure maintenance, etc. And that's an on-going expense...so they need to ensure either an on-going cash flow, or a sufficiently large initial payment...and it works better for responsible action if it's an on-going cash flow that the payer can get out of for good cause.
So I think that either the liability stays with the auto company, and so does the ownership, or the company only sells an initial period of liability coverage with renewal options and ownership (and control) lies with the individual. And the second option has all kinds of traps and potholes in it...probably more than the first.