I don't know what kind of drivers education you get where you live but where I live and have lived one of the basic bits is that you know how to park and lock your vehicle safely and that includes removing the ignition key (assuming your car has one) and setting the parking brake. You aim the wheels at the kerb (if there is one) when you're on an incline. And if you're in a stick shift you set the gear to neutral (in some countries they will teach you to set the gear to 1st or reverse, for various reasons).
We also have road worthiness assessments that ensure that all these systems work as advertised. You could let a pack of dogs loose in my car in any external circumstance and they would not be able to move it, though I'd hate to clean up the interior afterwards.
Who's liable?
I think this would be a freak accident. Nobody would be liable.
But you would be liable for civil damages, because that does not. There are multiple theories for which to establish liability, but most likely this would be treated as negligence.
> Who's liable?
You are. It's still your dog. If you would replace dog with child the case would be identical (but more plausible). This is really not as interesting as you think it is. The fact that you have a sentient dog is going to be laughed out of court and your neighbor will be in the docket together with you for attempting to mislead the court with your AI generated footage. See, two can play at that.
When you make such ridiculously contrived examples turnaround is fair play.
Everything an AI does is downstream of deliberate, albeit imperfect, training.
You know this, you rig it all up and you let things happen.