Very sad indeed..
Guys, if there's a lesson to be learned here from this tragedy - IF you break down, be aware of your surroundings and where you need to be in order to be safe.
I have an emergency toolkit that currently has a small reflective triangle, I plan on getting flares, and I have a cheap reflective high visibility vest (Harbor Freight sells some cheap ones, they're good enough!) Put the four ways on!
Try to coast to the side of a road if you can, and DON'T sit near the car - hop over the Armco barrier if one is present.
BE SAFE and I hope we don't break down in a bad spot.