Health,
From your posts its noticeable that you are not experienced in emergency medicine.
The fact that you found a sentence in some EMT book stating, Trauma are there medical causes, has nothing to do with an MVA and of course not with a single car MVA vs multi car.
One last thing, when responding to a post, dont send me to a previous post or other page, if you take the time and energy to respond to every little post questioning your credentials or statements, please respond with actual substance.