My parents have a RV with a really loud air horn, and I would love to somehow incorporate something like that into the VX. That would absolutely scare the sh.. out of some of these morons. :-)

In these parts they used to (probably still do) sell one that roared like a big cat, maybe because we have the Jaguars here. Not sure that really has the desired effect, though. I want to freak 'em out.