My concerns are less about the vehicle technology but what gets implicitly bundled with it. Privacy, for example, being an issue, with newer cars being cellular

My concerns are less about the vehicle technology but what gets implicitly bundled with it. Privacy, for example, being an issue, with newer cars being cellular equipped and having telemetry enabled and no way to opt out. Tesla is allowed all my GPS data, which I don't feel comfortable with. With an older car you're free to rebuild it within your means - can you legally do the same with an electric vehicle? With the hardware and software being so locked down, it may not even be legal to tamper with it, which on one hand is a valid concern for stuff like self-driving technology, but at the same time makes these newer cars proprietary black boxes that you can only ever send back to the factory.