341 Don't HOLD it BACK! SHORTAGE of rubber means using our road vehicles with the greatest economy. And that means getting every hour of running time we can from the vehicles in use. While you hold up a lorry it can't move goods and that is what it is for. Of course lorries must stop for loading and unloading. But can you cut down that lost journey time? Say to yourself that every vehicle, no matter where it goes, is serving the war effort, serving the fighting men. All journeys, now, lead to the battlefront.