Hey there TB,
I'm very interested to see how it goes on your next try. I've been thinking of taking a copy of that same PDF document up to an expressway gate and seeing exactly what happens but I've not yet dared. Videotaping the whole thing sounds like a great idea too.
Basically, I really want to use the expressway. My 250 is more than fast enough and it would make my trips down to see the wife and baby much more convenient.