You are driving on publicly funded roads in a licensed machine where the police have the legal authority to demand you submit to inspection at any time, and you

You are driving on publicly funded roads in a licensed machine where the police have the legal authority to demand you submit to inspection at any time, and you legally must purchase insurance from a private company to operate it. I would say local speed governors would be less authoritarian than many interventions that already exist for driving, which is an act that is already a leading cause of death in North America. Just make it an IR blaster on the street lamps over the road that the municipality can remote command to send out the "low speed limit next N meters" signal. Let it be legal for drivers to override the governor, but doing so is effectively an admission of guilt that you're speeding.