Self-driving cars offer tremendous advantages. We must fight to prevent them from imposing dangers, such as total surveillance of the passengers, and proprietary software for the driver or the passengers.

We must prevent them from being operated as a Guber-style taxi system if, as Guber does, it requires users to run nonfree software to call a car and to pay for the ride.

We must insist that, if you buy a car, you can change the software in it.