probably things which they were carrying like bags ets,... but it's possible they could also be limbs since at that impact pressure human limbs could be torn off...
i could three people,.. all dressed in western clothing. one is hit and thrown in the path of hte white car (which runs them over) the 2nd is thrown up and lands behind the black car and the 3rd is either carried away by the black car or has gone through the windscreen and is inside the black car...
personally i don' tthink this crash happened in PK... for obvious reasons (we don't drive on that side of the road!!!)