Im sure any IT professional around here would confirm that as the person monitoring the system I could turn off Sergeantdave Livesinmi, or I could potentially turn off the ability for any member of the Livesinmi family to start a car, or I could just disable the car.
You didn’t answer the question: How would the federal government turn off all charging stations across the world for the car that John Smith is driving?
Back at you: What’s to prevent a guerilla movement from shutting down all food, water and energy going to the fascists in DC?