I suspect the manufacturer probably cares less about what you do to your own car and hacking it, than they do about the potential for security compromise of the

I suspect the manufacturer probably cares less about what you do to your own car and hacking it, than they do about the potential for security compromise of their products on a broader scale, where they will then get blamed and sued for not having closed said loopholes. It is a no-win situation when it comes to fault assignment.