I like the AA badge. Did the driver still salute you (and if he didn't, we all know what that means, don't we ?).
Another of those old traditions which probably won't mean anything to yoof of today!
I remember the grumbling when they stopped the practice in 1961! A rather grumpy business acquaintaince of my father passed an AA man, who didn't salute. So this chap continued cautiously, although this was 4 years before the nanny-state 70 mph limit was introduced by Barbara Castle and there wouldn't have been any speed traps out of town. So he went back and gave the patrolman a piece of his mind, only to be told that the 'saluting code' had been discontinued....