Terrible news, in cases like this best to hope for the best but expect the worse.

Wrecks are bad, had an uncle about half a year ago killed on the road in Alabama. Traffic was stopped for a minor accident up ahead, he stopped and was last in the line of backed up vehicles. Along comes a wench talking on a cell phone and slammed into him full speed, he died instantly from a neck fracture, she survived with only cuts & bruises. My aunt, his wife, looked like she was going to die too but she pulled through, she is now confined to a wheelchair for the rest of her life.
All of this because someone was distracted, folks must realize that driving demands total concentration, nothing is more important than that. Humans cannot completely concentrate on more than 1 thing, anything that distracts takes away from crucial reaction time, which is measured in seconds on a freeway. The majority of accidents, by nature & definition, are preventable by simply being a responsible driver and using due caution.
Once again I hope the best for your relation, that is 1 bad wreck and is a miracle he survived at all.


Doug