@Setanta,
I tend to stay off it. I'm a long time fast driver being more careful.
Some fraction of those venturing to drive slow on a freeway may not just be nuts, but have a reason and a need.
Just dumping from a superior place - good for you, Set, and others. Of course some folks on the freeway are testing limits.
Some may be trying to cross a city for good reason, in desperation.
Do you all assume your fellow drivers on the freeway are without psychological baggage?
Please, set, you running some person off the highway could be smart on occasion, but mostly, you'd be the threat to the rest of us.