Remember that EMP that MIGHT disable new cars?

Well, if you have any vehicle that you can get a third party to unlock when you've locked your keys in, guess what? You don't really control your car. One day you're going to see a signal bounce off a satellite and shut your car down when a sensor fails and it starts polluting more than "it should".
And if they can do that, then they can disable it any time they want to, and probably lock you in inside, and then yur a sitting duck. Maybe they can short that fat batterypack yur sitting on and set you on fire; All hail electric cars your hi-powered portable crematorium.