Nice Chrysler commercial. :(
To me, being hit from behind is the biggest danger on the road because in most cases like this busy freeway situation you can't really do anything to avoid it.
It's a land of 10,000 intersections. Intersections are most dangerous. Remember, if you get broadsided in an intersection on your driver door, you have approximately 5 inches or so of a hollow metal door protecting you. The energy and sideways forces are immense. On freeways, generally everyone is going the same direction. Intersections are a whole different, deadly animal.