Taxing EVs makes perfect sense. They still need roads to be built and maintained.
Adding an enforcement fee for a car that doesn't need enforcement is just absurd. If the number of tickets being written drops because there are no more speeding cars and reckless drivers, then just reduce the size of the police force. You don't need patrol cops any more and that's a good thing. Instead of employing people as patrol cops, they can instead work as artists or scientists or something that makes the world better instead of being a necessary evil.
Except traffic enforcement (despite how much we might despise it) is not the "necessary evil" in this case. Traffic enforcement is done by officers not needed at actual incidents, like trouble calls, emergency response, etc. Take away "those officers" and you have a police force that can't respond nearly as well to a major incident like an active shooter, armed robbery in progress, pursuit, etc. and will not respond as fast to incidents like breaking/entering, assault, etc. where response time is critical. This is what we expect from the police force, and we currently exploit the need for a traffic safety deterrent incentive (a fine) to pay for it. If it's not there any more, either taxes will go up or police protection will go down.
Now, is a future of almost ubiquitous driverless-car use preferable for its own improvement in safety and efficiency? Probably. Let taxation and funding come from actual citizen demand (and passed in voted tax levies), not from how effective speed traps are.
