I spent a lot of my productive years removing victims and bodies from wrecked cars. I did it for well over a decade (and at least 100 bodies) before I removed a seat belted body from a wreck. That's much too small of a sample to draw any realistic percentages from but a lot bigger than the "I would have been killed if...." group has to draw from. I never did treat anyone who had successfully "jumped out of the way" but I might well have found a few who tried unsuccessfuly, they were in no condition to say one way or the other. Long before I was involved in being a FF/EMT I was convinced that it was worth wearing a belt just for the better chance of maintaining control of the vehicle, getting up close and personal with crashes just added to the reasons for doing it.

Bruce