That doesn't work unless you also eliminate all cars under direct human control, which is not practical, possible, or desirable. And BTW, forcing adoption of a

That doesn't work unless you also eliminate all cars under direct human control, which is not practical, possible, or desirable. And BTW, forcing adoption of automated cars only will quickly lead to situations like the one where you can lay down a chalk line around an automated car, and it winds up being immobilized to avoid crossing the lines. Far worse sabotage will ensue...