The five occupants of this 2008 Dodge Grand Caravan — my son, daughter-in-law, and three grandchildren — survived a head-on collision on the TransCanada Highway Thursday evening. I offer the following details in hopes that other families will find it helpful to understand the factors that decisively improved their chances of survival. Shortly before 5 p.m, August 26, my family was westbound on Route 105 in Lexington, Nova Scotia, just north of the Canso Causeway, when a severe rain squall hit the area. Daughter-in-law Jenn had just slowed down when an eastbound car apparently hydroplaned and spun across the centerline into...