On our way to Vegas (I-15) some dude in a truck had 2 matresses sp? on the back of his pickup above the cargo line. All of the sudden the flimsy wax lines snap and the mattresses go airborne. My friend, who was driving in front of me takes a queen sized mattress in the windshield,(2003 toyota matrix). Needless to say, that ended our trip. The worse part about public roads is sharing them. ;-)