head on or kill his own damn self. >> reporter: those fears realized when he came upon the deadly wreck. the truck reported seeing minutes before was tangled amid the heap of mangled metal. he later cnn affiliate the driver of the pickup said he was texting and driving. >> my mind went blank. i didn't know what to think. i mean -- you can't be texting and driving all over the road for that long. >> reporter: investigators have not determined a cause of the crash. a spokesman for the texas department of public safety tells cnn they're investigating all possibilities. troopers will interview the pickup truck driver. the 20-year-old is hospitalized along with rose mary harris, the lone survivor aboard the bus. for fellow people, a difficult week awaits as they remember the crash victims. they will once again pile into pews in the days ahead as they