Truth be told (you wouldn't think it from my posts in this thread) I'm not actually pro things like technically implemented speed limits, enforced distance between vehicles and so on. However, what gets my goat is this. Because none of these things are in place, folk are obviously free to do whatever they like. So when you're going about your day to day business from a driving perspective, generally staying within the law and trying your best to be a decent driver, you're surrounded by folk that ignore all of this to varying degrees.
Years ago, they made a street I was living in a 20 zone and installed speed bumps. We actually had a set of them directly outside our house. This was quite a busy residential road, cars parked both sides, very built-up, bus route and used as a rat run.
This meant diddly squat to a fairly high percentage of drivers. You'd still see them flying up and down the road, some excessively so. The same must be true all over the country.
Soooo ... if we're incapable as a collective of doing it properly, bring in the tech to force us. That's the stage I'm reaching with all of this.