The problem with this isn't the idea of a car repossessing itself per se, because repossession is already a legitimate thing; it's the idea that your car can be remotely controlled by anyone other than you. There are already so many things that can go wrong. I don't want to buy a car that can be remotely disabled because I drove near a protest, or because there was a "clerical error" at Ford, or because my payment di…
Hackers have been able to compromise cars for at least a couple of decades, and while car manufacturers are getting better at securing their products, they are all pushing hard for further connectivity. This means apps and subscriptions for your car, new protocols that lets cars exchange information, and a huge reliance on cloud.
Source: first hand sources working in well known automotive corporations.