Medic for 10+ yrs. Responded to an MVA, front impact with cement barrier, where a teenager in the passenger seat had her feet up on the front dash (seatbelt on). The car accordian'd as it should have, but her legs were in front of part of the A-column and where the crumple zone of a car meets the rigid "safety cell" where passengers are meant to be seated, protecting your body behind the A-column and underneath the dash. When the hood pushes backward into that area it should meet resistance from the internal frame, but because of the way she was seated, her legs were driven into the plate of the car's hood, resulting in lateral amputation of both legs-- (instead of cutting a hotdog in half, it's like slicing it lengthwise all the way through). The force folded her in half so badly her own body broke her hips and jammed into her upper chest. When we got there she was more liquid than person; it was really hard to figure out how to even scoop up someone who's still alive like that. Absolute miracle she lived. I realize this is perhaps more anecdotal to you than fact, because it's shitty when people get into car accidents at all, but if you want a not-so-fun image to scare you away from something, it comes to mind. Don't extend your body towards the crumple zone. The sense of confused horror I had when I realized she was still alive, and how in-pieces she was, will forever prevent me from EVER sitting like her in a car, or allowing a passenger to sit like that when I'm driving. ****. No.