[Ghoulish Delight]

My impression is that car bombings are carried out, in general, by the terrorist masses. And while they are truly terrifying, they are not particularly damaging (most kill no more then a handful of people). Even pre-9/11, it was no small feat to get terrorists over. It took planning and expense. They're not going to waste that effort on one guy to go blow himself up and take out a few people. That's like saying, "Assault rifles are really effective weapons, why didn't we just send a guy over to Iraq with an assault rifle?" Car bombings are an effective tool for them in their local area because it's quick, dirty, and cheap. If they are going to go to the trouble of doing something over here, it's going to be something big, a-la 9/11.