Government information pamphlet on using your car for escape and protection in a nuclear attack. Copyright 1955.
Found in "Dr. Atkins Diet Revolution" by Robert C. Atkins M.D., published by McKay, 1972.
ED: From the pamphlet: "If you have room, pick up walking evacuees," "Remember - you can push or pull another car with little increase in your own gasoline consumption," "Tests under an actual atomic explosion in Nevada proved that modern cars... ...give a degree of protection against a blast, heat and radiation."
It was a simpler time, wasn't it?