Heh...it's funny you guys mention vans. I always avoid them.
Much of what has been discussed here is covered in the IMPACT course. It's not just physical fighting, though that is the main focus. It emphasizes boundary setting and awareness too. Much can be avoided if one can recognize warning signs early.
I have a video of some of my fights, but I don't know how to upload it on to my computer. Here's an idea of what you'd learn though:
http://www.youtube.com/watch?v=EBsQGXY4RZ8
In truth, the fights are actually a little rougher and longer than what the video shows. They start from the very beginning, whether it's a guy grabbing you outright or a guy kindly chatting you up at a bus stop. You're taught to look for clues and to clearly set your boundaries so as to hopefully discourage an attack. And then of course, if necessary, you fight. It's mentally and physically exhausting, but it's fantastic.
They simulate all kinds of scenarios. Among others, I had being cornered at an out-of-the-way room during a party, and waking up in my bedroom to find a man on top of me. They cover harmless flirting and simple curiosity too, so that you don't leave the course and kick the shit out of the next guy who innocently asks you for the time.
One thing I don't like about the YouTube clip is the girly, bunny-hopping at the end. *cringe* We didn't do that. We yelled, we screamed, we swore, we pounded on the mats like warriors ~ it was pretty intense. When it was time for Graduation, which is open to the public, those of us on the sidelines had to reel ourselves in a bit.
I should mention that none of us started out like that. They taped our first day as well, so we could see how much we had progressed, and it was like day and night. We were all so afraid to hit, and even those of us who thought we were already tough appeared quite meek. I learned I'm waaay too friendly and trusting, and I can easily miss clues. Other women gave off that shy little mouse vibe, which ain't so hot either.
There's a lot of talking and bonding too. Some tears. The male instructors are wonderful (we had 3). Their job isn't easy, either mentally or physically, but they do it because they have women they love, and this inspires them to help all women learn to defend themselves. In us they see their wives, mothers, daughters, sisters, etc.
Man, sorry about the long post. If anyone has questions or would like more details, feel free to ask. The IMPACT course really changed me for the better. I'm still very open and friendly, but the main difference is, if necessary, I now have no problem head butting, breaking a nose or gouging someone's eyes out.