This is being widely circulated right now, but it's well worth reading: Malcolm Gladwell on SUVs.

In a thirty-five-m.p.h. crash test, for instance, the driver of a Cadillac Escalade--the G.M. counterpart to the Lincoln Navigator--has a sixteen-per-cent chance of a life-threatening head injury, a twenty-per-cent chance of a life-threatening chest injury, and a thirty-five-per-cent chance of a leg injury. The same numbers in a Ford Windstar minivan--a vehicle engineered from the ground up, as opposed to simply being bolted onto a pickup-truck frame--are, respectively, two per cent, four per cent, and one per cent.