Yes, and clearly if an asteroid hits the world, we will not have to worry about speed limits at all! We should skip doing the work. As usual, don't let perfect

Yes, and clearly if an asteroid hits the world, we will not have to worry about speed limits at all! We should skip doing the work. As usual, don't let perfect be the enemy of good enough. We have scooters that limit their speed in pedestrian zones and drones weighing 35g that will refuse to fly anywhere near airports. Yet cars that know perfectly well where they are can go 100mph in cities. It's not reasonable.