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MODERN VAN TYPE TRAILERS carry most Piggyback shipments on SP-by the truckload or the trainload.
EVEN DELICATE SHIPMENTS like Polaris missile components are protected by SP Piggyback's controlled, cushioned ride. (Little did I know that just five years later I would be in the Navy and assigned to a Polaris missile submarine. The fine print on the back of the container says, "Rocket ammo projectile." Even after 30 years, I still can't reveal what that is.)
FROZEN FOODS AND PERISHABLES can now be shipped Piggyback on SP in Pacific Fruit Express's new mechanically refrigerated Tempco-Vans.