The picture I just saw showed them going out of the front. I
m not sure they would make those things to slow the passengers down, they need to get out fast, and I would think that slowing them would cause possible injuries and/or deaths, and resulting in lawsuits.

Not to drift this thread, (my humble apologies arney) but didn't think this story worthy of a new thread, but it is mildly interesting, to me.

http://news.msn.com/crime-justice/into-the-wild-hunter-fatally-shot-by-police-in-alaska