Sounds to me like this guy is a pretty good parent so I wouldn't worry too much about having to ever deal with his son.
The kid was just pushing his dad's buttons, as were all the other kids that were mentioned. They're teens, it's gonna happen, daily, for at least a couple years. No one involved is terrible. The teens will most likely grow up and mature and become respectable adults.
Don't you worry about a thing darlin'.C'est la vie.
I don't think someone with the parenting style to "ignore, ignore, ignore" would go away for a super hands on, week long, one on one vacation with their teen.
And by rolling down the window numerous times asking him what was up proves he wasn't ignoring anyone. I personally would have sat there and continued talking on the phone or drove away, THAT'S how you ignore.
Just sayin'.
This is where we disagree. I have seen kids like this, and they tend to grow up and become more of a problem to society. More then likely, this father is a proponent of the if you don't stop right now, "I'm going to count to three" and then you are really going to be in trouble crowd.