something similar happened in the town in ireland i grew up in, a guy driving a van had a heart attack and killed a pedestrian, not on this scale tho. what can you say, these things happen. my thoughts are with those who witnessed this terrible event and the families of those affected. as the bible says in ecclesiastes 9:11: ''I returned to see under the sun that the swift do not have the race, nor the mighty ones the battle, nor do the wise also have the food, nor do the understanding ones also have the riches, nor do even those having knowledge have the favor. Because time and unforeseen occurrence befall them all.'' Sometimes you are just in the wrong place at the wrong time...