> Beyond all this, without understanding the underlying cause of the behavior you mention, it's hard to say from a risk perspective if the car made the right ch

> Beyond all this, without understanding the underlying cause of the behavior you mention, it's hard to say from a risk perspective if the car made the right choice. What argument could there be that suddenly slowing down on the freeway with no visible obstruction is the right choice? It does not avoid any danger, but it creates a danger of getting rear-ended by cars behind you.