Blowing the horn is so rude.. I agree get out and knock on the door. I especially hate it when its early in the morning.. People are asleep dangit.
Try it in a 24\7 state.
Take the Expressway...http://www.youtube.com/watch?v=qgwCInB_mmI
A boy came to pick my daughter up for a date, and just honked the horn instead of coming to the door. I very politelyt (ha!) explained to the little twerp that such behavior was unnaceptable and he would not be taking my daughter out that evening. Well, I actually was polite, but I was very pointed in making sure he understood that his behavior indicated he didn't respect my daughter, and neither of us was about to put up with that.My daughter was livid, but I'd do it again in a hearbeat. If the person you're there for isn't important enough for you to get our of the stupid car, then they aren't very important at all.
Doesn't happen here, and yes I would find that annoying.