This fear (unlike my fear of throwing up) is completely laughable. I don't think I realized it until about a month of so ago when I was driving down the road and one of these things drove past me. I was really afraid! And within the next 3 days I saw 2 more. So strange.
Anyhow my fear pretty much applies to any white van along these lines...
It's funny too because I don't think I thought twice about it when I was living in Italy and these things are all over the place, but here - that's another story.
I think it's too many action movies...I feel like someone is going to open the door, drag me in, and force me to reveal government secrets or something.