Had to do it twice;
1) 80 KM/H (50 mpg) 4 lane highway in the right lane, car passed then pulled in very close in front of us, braked hard and pulled into a gas station. Hit the brakes then the air horns. Missed him by inches. I followed him in and had a few words. His wife said please don't yell at him we're on our honeymoon. I said I'm driving over 12 tons. Keep doing things like that you won't live to see your first anniversary.
In downtown Monclova, Mexico, approaching intersection with the green light, car in the cross street blew the light. Again, missed by inches.
Both times there would have been a collision without the auxiliary braking in the toad.